diff --git a/dlls/dpnet/tests/server.c b/dlls/dpnet/tests/server.c
index 4314c69ccc1..3d59d746fba 100644
--- a/dlls/dpnet/tests/server.c
+++ b/dlls/dpnet/tests/server.c
@@ -418,7 +418,8 @@ done:
 /* taken from programs/winetest/main.c */
 BOOL is_stub_dll(const char *filename)
 {
-    DWORD size, ver;
+    UINT size;
+    DWORD ver;
     BOOL isstub = FALSE;
     char *p, *data;