diff --git a/src/tool_urlglob.c b/src/tool_urlglob.c
index 2cccef25c6..4aa2e95bde 100644
--- a/src/tool_urlglob.c
+++ b/src/tool_urlglob.c
@@ -591,7 +591,7 @@ CURLcode glob_next_url(char **globbed, struct URLGlob *glob)
       }
       break;
     case UPTNumRange:
-      msnprintf(buf, buflen, "%0*lu",
+      msnprintf(buf, buflen, "%0*" CURL_FORMAT_CURL_OFF_T,
                 pat->content.NumRange.padlength,
                 pat->content.NumRange.ptr_n);
       len = strlen(buf);
@@ -661,7 +661,7 @@ CURLcode glob_match_url(char **result, char *filename, struct URLGlob *glob)
           appendlen = 1;
           break;
         case UPTNumRange:
-          msnprintf(numbuf, sizeof(numbuf), "%0*lu",
+          msnprintf(numbuf, sizeof(numbuf), "%0*" CURL_FORMAT_CURL_OFF_T,
                     pat->content.NumRange.padlength,
                     pat->content.NumRange.ptr_n);
           appendthis = numbuf;