diff --git a/ext/com_dotnet/com_com.c b/ext/com_dotnet/com_com.c
index fd2d1ee9a439..cfc343405e0e 100644
--- a/ext/com_dotnet/com_com.c
+++ b/ext/com_dotnet/com_com.c
@@ -321,7 +321,7 @@ PHP_FUNCTION(com_get_active_object)
 		IDispatch_Release(obj);
 	}
 	if (unk) {
-		IUnknown_Release(obj);
+		IUnknown_Release(unk);
 	}
 	efree(module);
 }