diff --git a/node_modules/madge/lib/tree.js b/node_modules/madge/lib/tree.js
index d987da7..10522a3 100644
--- a/node_modules/madge/lib/tree.js
+++ b/node_modules/madge/lib/tree.js
@@ -222,7 +222,7 @@ class Tree {
 	 * @return {Boolean}
 	 */
 	isNpmPath(path) {
-		return path.indexOf('node_modules') >= 0;
+		return path.indexOf('node_modules') >= (this.config.baseDir ? this.config.baseDir.length : 0);
 	}
 
 	/**