diff --git a/cv8/program.c b/cv8/program.c
index fe06d0f..1522de0 100644
--- a/cv8/program.c
+++ b/cv8/program.c
@@ -49,8 +49,9 @@ struct tree* search(struct tree* this){
     }*/
     char c = getchar();
     char buffer[50];
-    buffer[strlen(buffer)-1]='\0';
-
+    memset(buffer, 0, 50);
+    int x = strlen(buffer);
+    buffer[x-1]='\0';
     memcpy(buffer, this->value, 50);    
     //printf("%s\n", buffer);
     if(buffer[0] != '*'){