diff --git a/cv8/program.c b/cv8/program.c
index 58bbf43..6f82738 100644
--- a/cv8/program.c
+++ b/cv8/program.c
@@ -24,11 +24,13 @@ struct tree* read_tree(){
     char* r = fgets(buffer,20,stdin);
     int x = strlen(buffer);
     buffer[x-1]='\0'; 
-    if(buffer[0] == '\0'){  
-        exit(0);
-    }  
+  
     assert(r);
     struct tree* node = calloc(1,sizeof(struct tree));
+    if(buffer[0] == '\0'){
+        return node;
+    }
+
     memcpy(node->value, buffer, 20);
     /*if(node == NULL){
         return create_node();