diff --git a/plugins/node_modules-bin/node_modules-bin.plugin.zsh b/plugins/node_modules-bin/node_modules-bin.plugin.zsh
index 7e9c75993..2b8280b00 100644
--- a/plugins/node_modules-bin/node_modules-bin.plugin.zsh
+++ b/plugins/node_modules-bin/node_modules-bin.plugin.zsh
@@ -27,7 +27,7 @@ zsh-node_modules-bin-update-path() {
   export PATH
 
   # for next run
-  export OLD_NPM_BIN_PATH=$NPM_BIN_PATH
+  OLD_NPM_BIN_PATH=$NPM_BIN_PATH
 }
 
 precmd_functions+="zsh-node_modules-bin-update-path"