diff --git a/dlls/dwmapi/dwmapi.spec b/dlls/dwmapi/dwmapi.spec
index ebe7494ec12..d6d675a58ea 100644
--- a/dlls/dwmapi/dwmapi.spec
+++ b/dlls/dwmapi/dwmapi.spec
@@ -1,6 +1,6 @@
 100 stub @
 101 stub @
-102 stub DwmEnableComposition
+102 stdcall DwmEnableComposition (long)
 103 stub @
 104 stub @
 105 stub @
diff --git a/dlls/dwmapi/dwmapi_main.c b/dlls/dwmapi/dwmapi_main.c
index 009f1949973..dd8714ba160 100644
--- a/dlls/dwmapi/dwmapi_main.c
+++ b/dlls/dwmapi/dwmapi_main.c
@@ -59,3 +59,13 @@ HRESULT WINAPI DwmIsCompositionEnabled(BOOL *enabled)
     *enabled = FALSE;
     return S_OK;
 }
+
+/**********************************************************************
+ *           DwmEnableComposition         (DWMAPI.102)
+ */
+HRESULT WINAPI DwmEnableComposition(UINT uCompositionAction)
+{
+    FIXME("(%d) stub\n", uCompositionAction);
+
+    return S_OK;
+}