diff --git a/dlls/twain_32/tests/dsm.c b/dlls/twain_32/tests/dsm.c
index 1e9764dccb0..cf0f7b42707 100644
--- a/dlls/twain_32/tests/dsm.c
+++ b/dlls/twain_32/tests/dsm.c
@@ -72,7 +72,10 @@ static BOOL get_onevalue(TW_HANDLE hcontainer, TW_UINT32 *ret, TW_UINT16 *type)
         return TRUE;
     }
     else
+    {
         *ret = 0;
+        if (type) *type = 0;
+    }
     return FALSE;
 }