diff --git a/qga/service-win32.c b/qga/service-win32.c
index 09054565d3..843398a6c6 100644
--- a/qga/service-win32.c
+++ b/qga/service-win32.c
@@ -29,7 +29,7 @@ static int printf_win_error(const char *text)
         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
         (char *)&message, 0,
         NULL);
-    n = printf("%s. (Error: %d) %s", text, err, message);
+    n = printf("%s. (Error: %d) %s", text, (int)err, message);
     LocalFree(message);
 
     return n;