diff --git a/du3/program.c b/du3/program.c
index aa34cbd..2bc639b 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -82,17 +82,16 @@ void print_stack(struct stack* mystack)
     printf(" \n");
 }
 
-int is_whitespace_only(const char* str) 
-{
-    while (*str) 
-    {
-        if (!isspace((unsigned char)*str)) 
-	{
-            return 0;
-        }
-        str++;
-    }
-    return 1;
+int is_whitespace(const char* str) {
+	    while (*str) 
+	    {
+		            if (!isspace((unsigned char)*str)) 
+			    {
+				                return 0;
+                            }
+			    str++;
+	    }
+	    return 1;
 }
 
 int main()
@@ -104,11 +103,6 @@ int main()
         {	
             int flag=switch_operators(input);
             input[strcspn(input,"\n")]=0;
-	    if (strlen(input)==0 || is_whitespace_only(input))
-        	{
-                	printf("no input\n");
-            		return 0;
-        	}
             if (flag==0 || flag==-1)
             {
 			if(flag==-1 && mystack.values[mystack.size-1]==0)
@@ -122,7 +116,7 @@ int main()
             else
             {
                 char* ptr;
-		if (*ptr!='\0') 
+		if (*ptr!='\0' && !is_whitespace(ptr)) 
 		{
                 	printf("bad input\n");
                 	return 0;