Index: include-fixer/tool/clang-include-fixer.py
===================================================================
--- include-fixer/tool/clang-include-fixer.py
+++ include-fixer/tool/clang-include-fixer.py
@@ -37,6 +37,14 @@
                       help='String to initialize the database.')
   args = parser.parse_args()
 
+  # Check whether the path of clang-include-fixer binary is valid.
+  try:
+    invocation = [binary, '-help']
+    subprocess.check_output(invocation)
+  except:
+    print >>sys.stderr, "Unable to find clang-include-fixer binary."
+    return
+
   # Get the current text.
   buf = vim.current.buffer
   text = '\n'.join(buf)