diff --git a/signed.c b/signed.c
index d440b6b..3995f14 100644
--- a/signed.c
+++ b/signed.c
@@ -12,7 +12,7 @@ int main(int argc, char *argv[]) {
         return 0;
     }
 
-    if (argv[1][0] == "-") {
+    if (argv[1][0] == '-') {
         printf("1");
         num = -num;
     } else {