--- a/browser/config/mozconfigs/linux32/release
+++ b/browser/config/mozconfigs/linux32/release
@@ -1,14 +1,14 @@
 # This make file should be identical to the beta mozconfig, apart from the
 # safeguard below
 MOZ_AUTOMATION_SDK=${MOZ_AUTOMATION_SDK-1}
 
 if [ -n "$ENABLE_RELEASE_PROMOTION" ]; then
-  MOZ_AUTOMATION_UPLOAD_SYMBOLS=1
+  MOZ_AUTOMATION_UPLOAD_SYMBOLS=${MOZ_AUTOMATION_UPLOAD_SYMBOLS-1}
   MOZ_AUTOMATION_UPDATE_PACKAGING=1
 fi
 
 . "$topsrcdir/browser/config/mozconfigs/linux32/common-opt"
 
 ac_add_options --enable-official-branding
 ac_add_options --enable-verify-mar
 

--- a/browser/config/mozconfigs/linux64/release
+++ b/browser/config/mozconfigs/linux64/release
@@ -1,14 +1,14 @@
 # This make file should be identical to the beta mozconfig, apart from the
 # safeguard below
 MOZ_AUTOMATION_SDK=${MOZ_AUTOMATION_SDK-1}
 
 if [ -n "$ENABLE_RELEASE_PROMOTION" ]; then
-  MOZ_AUTOMATION_UPLOAD_SYMBOLS=1
+  MOZ_AUTOMATION_UPLOAD_SYMBOLS=${MOZ_AUTOMATION_UPLOAD_SYMBOLS-1}
   MOZ_AUTOMATION_UPDATE_PACKAGING=1
 fi
 
 . "$topsrcdir/browser/config/mozconfigs/linux64/common-opt"
 
 ac_add_options --enable-official-branding
 ac_add_options --enable-verify-mar