diff --git a/src/generic/evas/ps/main.c b/src/generic/evas/ps/main.c
index d069e77d91..6fdd74ce03 100644
--- a/src/generic/evas/ps/main.c
+++ b/src/generic/evas/ps/main.c
@@ -280,7 +280,8 @@ main(int argc, char **argv)
                {
                   // nothing much to do, the receiver will simply ignore the
                   // data as it's too short
-                  D("fwrite failed (%lu bytes): %m\n", width * height * sizeof(DATA32));
+                  D("fwrite failed (%llu bytes): %m\n",
+                    (unsigned long long)(width * height * sizeof(DATA32)));
                }
           }
         shm_free();