diff --git a/cv8/program.c b/cv8/program.c
index e922217..f161177 100644
--- a/cv8/program.c
+++ b/cv8/program.c
@@ -18,8 +18,8 @@ struct tree* read_tree(){
     buffer[x-1]='\0'; 
     
     assert(r);
+    
     if(buffer[0] != '\0'){
- 
         struct tree* node = calloc(1,sizeof(struct tree));
         memcpy(node->value, buffer,50);
         if(buffer[0] != '*'){ 
@@ -29,11 +29,12 @@ struct tree* read_tree(){
             if(node->right == NULL){    
                 node->right = read_tree();
             }
-        } 
+        }
+ 
     //if(node->left != NULL && node->right != NULL){
         return node;
     }
-   // }
+
 }
 struct tree* search(struct tree* this){
     
@@ -43,7 +44,7 @@ struct tree* search(struct tree* this){
     int x = strlen(buffer);
     buffer[x-1]='\0';
     memcpy(buffer, this->value, 50); */   
-    if(this != NULL){
+    if(this->left != NULL && this->right != NULL){
         if(c == 'a'){
             printf("%s\n", this->value);
             this->left = search(this->left);