diff --git a/reactos/dll/win32/kernel32/file/bintype.c b/reactos/dll/win32/kernel32/file/bintype.c
index 2722ba54134..bc8f2ed35d4 100644
--- a/reactos/dll/win32/kernel32/file/bintype.c
+++ b/reactos/dll/win32/kernel32/file/bintype.c
@@ -16,7 +16,9 @@
 #define NDEBUG
 #include <debug.h>
 
+#if DBG
 static ULONG gDebugChannel = kernel32file;
+#endif
 
 /* FUNCTIONS ****************************************************************/
 
diff --git a/reactos/dll/win32/kernel32/file/copy.c b/reactos/dll/win32/kernel32/file/copy.c
index 4055f876342..786c8f79b0c 100644
--- a/reactos/dll/win32/kernel32/file/copy.c
+++ b/reactos/dll/win32/kernel32/file/copy.c
@@ -15,7 +15,10 @@
 #include <k32.h>
 #define NDEBUG
 #include <debug.h>
+
+#if DBG
 static ULONG gDebugChannel = kernel32file;
+#endif
 
 /* FUNCTIONS ****************************************************************/
 
diff --git a/reactos/dll/win32/kernel32/file/create.c b/reactos/dll/win32/kernel32/file/create.c
index 894970a4c2e..8b487c3de92 100644
--- a/reactos/dll/win32/kernel32/file/create.c
+++ b/reactos/dll/win32/kernel32/file/create.c
@@ -17,7 +17,10 @@
 #include <k32.h>
 #define NDEBUG
 #include <debug.h>
+
+#if DBG
 static ULONG gDebugChannel = kernel32file;
+#endif
 
 #define SYMLINK_FLAG_RELATIVE   1
 
diff --git a/reactos/dll/win32/kernel32/file/curdir.c b/reactos/dll/win32/kernel32/file/curdir.c
index ee6d8553128..d58059d9539 100644
--- a/reactos/dll/win32/kernel32/file/curdir.c
+++ b/reactos/dll/win32/kernel32/file/curdir.c
@@ -19,7 +19,10 @@
 #include <k32.h>
 #define NDEBUG
 #include <debug.h>
+
+#if DBG
 static ULONG gDebugChannel = kernel32file;
+#endif
 
 /* GLOBAL VARIABLES **********************************************************/