diff --git a/tools/gn/misc/vim/gn-format.py b/tools/gn/misc/vim/gn-format.py
index 7e5d6a4..6170851 100644
--- a/tools/gn/misc/vim/gn-format.py
+++ b/tools/gn/misc/vim/gn-format.py
@@ -21,6 +21,8 @@
 
 # Change this to the full path if gn is not on the path.
 binary = 'gn'
+if vim.eval('exists("g:gn_path")') == "1":
+  binary = vim.eval('g:gn_path')
 
 def main():
   # Get the current text.