diff --git a/index.js b/index.js
index 56d693a..c73139f 100644
--- a/index.js
+++ b/index.js
@@ -161,7 +161,7 @@ const binarySearchTree = () => {
         }
       }
     };
-    return insertFn(rootNode);
+    insertFn(rootNode);
   };
 
   /**
@@ -220,7 +220,7 @@ const binarySearchTree = () => {
         }
       }
     };
-    return removeFn(value, rootNode);
+    removeFn(value, rootNode);
   };
 
   /**
@@ -235,7 +235,7 @@ const binarySearchTree = () => {
         traverseInOrderFn(currentNode.getRight());
       }
     };
-    return traverseInOrderFn(rootNode);
+    traverseInOrderFn(rootNode);
   };
 
   /**
@@ -250,7 +250,7 @@ const binarySearchTree = () => {
         traversePreOrderFn(currentNode.getRight());
       }
     };
-    return traversePreOrderFn(rootNode);
+    traversePreOrderFn(rootNode);
   };
 
   /**
@@ -265,7 +265,7 @@ const binarySearchTree = () => {
         cb(currentNode);
       }
     };
-    return traversePostOrderFn(rootNode);
+    traversePostOrderFn(rootNode);
   };
 
   /**
diff --git a/package.json b/package.json
index b55b498..f8b3e9c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@datastructures-js/binary-search-tree",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "binary search tree implementation in javascript",
   "main": "index.js",
   "scripts": {