diff --git a/gyp_chromium b/gyp_chromium
index 3ee04aab5..8e841d46b 100755
--- a/gyp_chromium
+++ b/gyp_chromium
@@ -207,7 +207,7 @@ def GetArgsStringForGN(supplemental_files):
 
   # gomadir is renamed goma_dir in the GN build.
   if 'gomadir' in vars_dict:
-    gn_args += ' goma_dir="%s"' % vars_dict['gomadir']
+    gn_args += ' goma_dir=%s' % EscapeStringForGN(vars_dict['gomadir'])
 
   # These arguments get passed directly as integers (avoiding the quoting and
   # escaping of the string ones above).