diff --git a/configs/linux/mozconfig b/configs/linux/mozconfig
index 44609fb95..f90b2e9e6 100644
--- a/configs/linux/mozconfig
+++ b/configs/linux/mozconfig
@@ -27,7 +27,8 @@ if test "$ZEN_RELEASE"; then
     # PGO may cause link errors on windows!
     if ! test "$ZEN_CROSS_COMPILING"; then
         # WE ARE JUST SUPPORTING PGO FOR LINUX!
-
+        export MOZ_PGO=1
+        ac_add_options MOZ_PGO=1
     fi
 
     export CFLAGS="-O2 -msse3 -mssse3 -msse4.1 -msse4.2 -mavx -maes"