diff --git a/scanner/scanner.c b/scanner/scanner.c
index cce8fd8..6c7d362 100644
--- a/scanner/scanner.c
+++ b/scanner/scanner.c
@@ -334,7 +334,7 @@ int main(int argc, char *argv[]) {
     sscanf(argv[3], "%ld", &minPts);
   }
 
-  if (argv > 4) {
+  if (argc > 4) {
     sscanf(argv[4], "%ld", &maxClusterSize);
   }