diff --git a/du4/program.c b/du4/program.c
index 394f41b..55d7d55 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -15,16 +15,16 @@ int main() {
 
         while (*start != '\n') {
             if (*start == '+' || *start == '-' || *start == '*' || *start == '/') {
-                if (has_operator) {
-                    printf("CHYBA\n");
-                    goto next_line;
-                }
                 has_operator = 1;
                 op = *start;
             } else if ((*start < '0' || *start > '9') && *start != ' ' && *start != '=' && *start != '.') {
                 goto next_line;
             }
             start++;
+       
+        if (!has_operator) {
+            printf("CHYBA\n");
+            goto next_line;
         }
 
         if (!has_operator) {