diff --git a/du4/program.c b/du4/program.c
index cca935e..dc952c7 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -36,7 +36,7 @@ for(int c=0;c<count;c++){
 	    break;
 	}
     }
-    if(skip==1||znk==0){
+    if(skip==1||znak==0){
 	continue;
     }
     float num1=strtof(start,&end);