diff --git a/du3/program.c b/du3/program.c
index 5a15666..bc5ad21 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -93,7 +93,7 @@ int main()
             input[strcspn(input,"\n")]=0;
             if (strlen(input)==0) 
             {
-		printf("no input");
+			printf("no input");
                 continue;
             }
             if (flag==0)