diff --git a/src/main.c b/src/main.c
index 38f9c76..4e1046e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -21,8 +21,10 @@ int main(void) {
   tree_clear(&tree);
 
   // Check if the tree is really empty
-  if (tree.root == NULL) printf("Tree is empty\n");
-  else printf("Tree is not empty: %d\n", tree.root->data);
+  if (tree.root == NULL)
+    printf("Tree is empty\n");
+  else
+    printf("Tree is not empty: %d\n", tree.root->data);
 
   // Check size and print inorder
   printf("Tree size: %d\n", tree_size(tree.root));