1 files changed, 1 insertions, 1 deletions
diff --git a/src/cg-base.c b/src/cg-base.c
index d9da32a..1309ded 100644
--- a/src/cg-base.c
+++ b/src/cg-base.c
@@ -657,7 +657,7 @@ int main(int argc, char* argv[])
       char *end;
       errno = 0;
       priority = (int64_t)strtoll(prio, &end, 10);
-      if (errno || *end)
+      if (errno || *end || !*prio)
 	usage();
     }