diff --git a/du4/program.c b/du4/program.c
index 1b7baea..d941c4a 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -4,8 +4,8 @@
 #include <ctype.h>
 
 int call(float A, float B, float C, char AC){
-    if(AC=='/'&&B==0||AC!=('+'||'-'||'*'||'-')){
-        return printf("CHYBA\n");;
+    if(AC=='/'&&B==0||AC==('+'||'-'||'*'||'-')){
+        return printf("CHYBA\n");
     }
     else if(AC=='+'){
         if(A+B==C)return printf("OK\n");
@@ -22,7 +22,8 @@ int call(float A, float B, float C, char AC){
     else if(AC=='/'){
         if(A/B==C)return printf("OK\n");
         return printf("ZLE\n");
-    }    
+    }
+  return printf("CHYBA\n");
 }
 
 int main()