diff --git a/helpers/make-firefox b/helpers/make-firefox
index 4f015e6f09267804e58195b46b0e9ead437810a0..35dd7ec31f65eb27042c135ac43314ab87e05187 100644
--- a/helpers/make-firefox
+++ b/helpers/make-firefox
@@ -25,10 +25,6 @@ REPOKEY=9BDB3D89CE49EC21
 
 . ./config
 
-#Replace md5sum checksums to match our changes.
-sed_md5() {
-    grep -rl $1 | xargs -r sed -i "s|$1|$2|"
-}
 rm debian/control
 
 # Disable remote settings antifeature.
@@ -118,6 +114,7 @@ grep -rl services.sync.telemetry.maxPayloadCount modules/ | xargs -r sed -i '/se
 grep -rl services.sync.telemetry.submissionInterval modules/ | xargs -r sed -i '/services.sync.telemetry.submissionInterval/s|43200|-1|'
 echo 'pref("dom.security.unexpected_system_load_telemetry_enabled", false);' | tee -a browser/app/profile/firefox.js
 echo 'pref("toolkit.telemetry.hybridContent.enabled", false);' | tee -a browser/app/profile/firefox.js
+sed_csum 5be1eaf4a2e1d1b35d9c13387f8f59b5f5d96a874b984396b7fae907e2938a8c 1024f857ad21f9e07b26560031ae205321355c100f9d1e57e269951bc0baf707
 
 # Remove Google API key
 sed '/Google API/,/google-api-keyfile/ d' debian/config/mozconfig.in -i