diff --git a/build/args/ffmpeg.gn b/build/args/ffmpeg.gn
index 84319c7596..3ccd99d6be 100644
--- a/build/args/ffmpeg.gn
+++ b/build/args/ffmpeg.gn
@@ -4,3 +4,4 @@ is_component_ffmpeg = true
 is_official_build = true
 proprietary_codecs = false
 ffmpeg_branding = "Chromium"
+enable_dsyms = false
diff --git a/script/run-gn-format.py b/script/run-gn-format.py
index 649b085bfa..a982d4f39c 100644
--- a/script/run-gn-format.py
+++ b/script/run-gn-format.py
@@ -15,7 +15,6 @@ def main():
   for gn_file in sys.argv[1:]:
     subprocess.check_call(
       ['gn', 'format', gn_file],
-      shell=True,
       env=new_env
     )