1 files changed, 1 insertions, 1 deletions

diff --git a/test/minigzip.c b/test/minigzip.c
index 1855575a..8df89373 100644
--- a/test/minigzip.c
+++ b/test/minigzip.c
@@ -118,7 +118,7 @@ static char *strwinerror (error)
         LocalFree(msgbuf);
     }
     else {
-        sprintf(buf, "unknown win32 error (%ld)", error);
+        sprintf(buf, "unknown win32 error (%lu)", error);
     }
 
     SetLastError(lasterr);