diff --git a/reactos/dll/win32/smdll/smdll.def b/reactos/dll/win32/smdll/smdll.def
deleted file mode 100644
index 938851cc85a..00000000000
--- a/reactos/dll/win32/smdll/smdll.def
+++ /dev/null
@@ -1,7 +0,0 @@
-LIBRARY SMDLL.DLL
-EXPORTS
-SmCompleteSession@12
-SmConnectApiPort@16
-SmExecuteProgram@8
-SmQueryInformation@20
-SmLookupSubsystem@20
diff --git a/reactos/dll/win32/smdll/smdll.rbuild b/reactos/dll/win32/smdll/smdll.rbuild
index 770a1ddceb9..b36561fd7f8 100644
--- a/reactos/dll/win32/smdll/smdll.rbuild
+++ b/reactos/dll/win32/smdll/smdll.rbuild
@@ -1,5 +1,5 @@
 <module name="smdll" type="nativedll" baseaddress="${BASEADDRESS_SMDLL}" installbase="system32" installname="smdll.dll">
-	<importlibrary definition="smdll.def" />
+	<importlibrary definition="smdll.spec" />
 	<include base="smdll">.</include>
 	<include base="ReactOS">include/reactos/subsys</include>
 	<define name="_DISABLE_TIDENTS" />
diff --git a/reactos/dll/win32/smdll/smdll.spec b/reactos/dll/win32/smdll/smdll.spec
new file mode 100644
index 00000000000..a917bf979a7
--- /dev/null
+++ b/reactos/dll/win32/smdll/smdll.spec
@@ -0,0 +1,5 @@
+@ stdcall SmCompleteSession(ptr ptr ptr)
+@ stdcall SmConnectApiPort(ptr ptr long ptr)
+@ stdcall SmExecuteProgram(ptr ptr)
+@ stdcall SmQueryInformation(ptr long ptr long ptr)
+@ stdcall SmLookupSubsystem(ptr ptr ptr ptr ptr)