diff --git a/reactos/dll/win32/twain_32/twain_32.def b/reactos/dll/win32/twain_32/twain_32.def
deleted file mode 100644
index 668e2df80c3..00000000000
--- a/reactos/dll/win32/twain_32/twain_32.def
+++ /dev/null
@@ -1,6 +0,0 @@
-; File generated automatically from twain/twain_32.spec; do not edit!
-
-LIBRARY twain_32.dll
-
-EXPORTS
-DSM_Entry@24
diff --git a/reactos/dll/win32/twain_32/twain_32.rbuild b/reactos/dll/win32/twain_32/twain_32.rbuild
index 78eafaaa31c..4eb53bd377d 100644
--- a/reactos/dll/win32/twain_32/twain_32.rbuild
+++ b/reactos/dll/win32/twain_32/twain_32.rbuild
@@ -1,5 +1,5 @@
 <module name="twain_32" type="win32dll" baseaddress="${BASEADDRESS_TWAIN_32}" installbase="system32" installname="twain_32.dll" allowwarnings="true" crt="msvcrt">
-	<importlibrary definition="twain_32.def" />
+	<importlibrary definition="twain_32.spec" />
 	<include base="twain_32">.</include>
 	<library>wine</library>
 	<library>ntdll</library>
diff --git a/reactos/dll/win32/twain_32/twain_32.spec b/reactos/dll/win32/twain_32/twain_32.spec
new file mode 100644
index 00000000000..fe79c9f19dc
--- /dev/null
+++ b/reactos/dll/win32/twain_32/twain_32.spec
@@ -0,0 +1 @@
+@ stdcall DSM_Entry(ptr ptr long long long ptr)