diff --git a/du5/program.c b/du5/program.c
index 5d9abed..2bcb8eb 100644
--- a/du5/program.c
+++ b/du5/program.c
@@ -42,6 +42,7 @@ int main()
         else
         {
             sscanf(line, " %127[^?]", question);
+            strcat(question, "");
         }
     }