diff --git a/tools/continuous_build/build_internal/masters/master.tryserver.webrtc/master.cfg b/tools/continuous_build/build_internal/masters/master.tryserver.webrtc/master.cfg
index 7ebb39ac9b..31285ebf30 100755
--- a/tools/continuous_build/build_internal/masters/master.tryserver.webrtc/master.cfg
+++ b/tools/continuous_build/build_internal/masters/master.tryserver.webrtc/master.cfg
@@ -108,7 +108,7 @@ linux_factory_dbg.EnableTests(linux_normal_tests)
 
 linux_factory_release = utils.WebRTCLinuxFactory(
     utils.BuildStatusOracle('linux_factory_release'), is_try_slave=True)
-linux_factory_release.EnableBuild()
+linux_factory_release.EnableBuild(release=True)
 linux_factory_release.EnableTests(linux_normal_tests)
 
 android_factory =  utils.WebRTCAndroidFactory(
@@ -127,7 +127,7 @@ mac_factory_dbg.EnableTests(mac_normal_tests)
 
 mac_factory_release = utils.WebRTCMacFactory(
     utils.BuildStatusOracle('mac_factory_release'), is_try_slave=True)
-mac_factory_release.EnableBuild(build_type='make')
+mac_factory_release.EnableBuild(build_type='make', release=True)
 mac_factory_release.EnableTests(mac_normal_tests)
 
 # Windows