diff --git a/a1/program.c b/a1/program.c
index 67b4181..7537fb2 100644
--- a/a1/program.c
+++ b/a1/program.c
@@ -42,6 +42,10 @@ int main() {
             }
         }
     }
-    printf("All brackets OK\n");
+    if (x > 0) {
+        printf("Missing closing brackets: %c\n", stack[x-1]);
+    } else {
+        printf("All brackets OK\n");
+    }
     return 0;
 }
\ No newline at end of file