diff --git a/reactos/drivers/svc_specs b/reactos/drivers/svc_specs
index 6dac69481ed..16083697063 100644
--- a/reactos/drivers/svc_specs
+++ b/reactos/drivers/svc_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/advapi32/advapi32_specs b/reactos/lib/advapi32/advapi32_specs
index 21561c2bed3..02ba08d1e79 100644
--- a/reactos/lib/advapi32/advapi32_specs
+++ b/reactos/lib/advapi32/advapi32_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__ -D__MINGW32__ -DWINNT -D_X86_=1 -D__STDC__=1 -D__stdcall=__attribute__((__stdcall__)) -D_stdcall=__attribute__((__stdcall__)) -D__cdecl=__attribute__((__cdecl__)) -D__declspec(x)=__attribute__((x)) -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/crtdll/crt_specs b/reactos/lib/crtdll/crt_specs
index 81539eee5ca..88677ea6886 100644
--- a/reactos/lib/crtdll/crt_specs
+++ b/reactos/lib/crtdll/crt_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1 -D__stdcall=__attribute__((__stdcall__)) -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__)) -D__declspec(x)=__attribute__((x)) -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 0
diff --git a/reactos/lib/fmifs/fmifs_specs b/reactos/lib/fmifs/fmifs_specs
index 096efd6c4c1..f9cd789df25 100644
--- a/reactos/lib/fmifs/fmifs_specs
+++ b/reactos/lib/fmifs/fmifs_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/gdi32/gdi32_specs b/reactos/lib/gdi32/gdi32_specs
index 096efd6c4c1..f9cd789df25 100644
--- a/reactos/lib/gdi32/gdi32_specs
+++ b/reactos/lib/gdi32/gdi32_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/kernel32/k32_specs b/reactos/lib/kernel32/k32_specs
index 096efd6c4c1..e5c1a5f645b 100644
--- a/reactos/lib/kernel32/k32_specs
+++ b/reactos/lib/kernel32/k32_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))  -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/ntdll/ntdll_specs b/reactos/lib/ntdll/ntdll_specs
index 096efd6c4c1..f9cd789df25 100644
--- a/reactos/lib/ntdll/ntdll_specs
+++ b/reactos/lib/ntdll/ntdll_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/psxdll/psxdll_specs b/reactos/lib/psxdll/psxdll_specs
index 21561c2bed3..1391c74591e 100644
--- a/reactos/lib/psxdll/psxdll_specs
+++ b/reactos/lib/psxdll/psxdll_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))  -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/user32/user32_specs b/reactos/lib/user32/user32_specs
index 096efd6c4c1..e5c1a5f645b 100644
--- a/reactos/lib/user32/user32_specs
+++ b/reactos/lib/user32/user32_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))  -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/lib/version/version_specs b/reactos/lib/version/version_specs
index 096efd6c4c1..e5c1a5f645b 100644
--- a/reactos/lib/version/version_specs
+++ b/reactos/lib/version/version_specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))  -D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1
diff --git a/reactos/specs b/reactos/specs
index 096efd6c4c1..2043634843d 100644
--- a/reactos/specs
+++ b/reactos/specs
@@ -35,7 +35,7 @@
 %{funsigned-char:-D__CHAR_UNSIGNED__}
 
 *predefines:
--Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__ -DWINNT  -D_X86_=1 -D__STDC__=1  -D__stdcall=__attribute__((__stdcall__))   _D_stdcall=__attribute__((__stdcall__))   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x))   -Asystem(winnt) -Acpu(i386) -Amachine(i386)
+-Di386 -D_WIN32 -DWIN32 -D__WIN32__ -D__MINGW32__ -DWINNT -D_X86_=1 -D__STDC__=1 -D__stdcall=__attribute__((__stdcall__)) -D_stdcall=__attribute__((__stdcall__)) -D__cdecl=__attribute__((__cdecl__)) -D__declspec(x)=__attribute__((x)) -Asystem(winnt) -Acpu(i386) -Amachine(i386)
 
 *cross_compile:
 1