diff --git a/thunderbird.sh.in b/thunderbird.sh.in
index 800c776..84ed613 100644
--- a/thunderbird.sh.in
+++ b/thunderbird.sh.in
@@ -139,7 +139,4 @@ fi
 NSS_SSL_CBC_RANDOM_IV=${NSS_SSL_CBC_RANDOM_IV-1}
 export NSS_SSL_CBC_RANDOM_IV
 
-# Linux version specific environment variables
-%RHEL_ENV_VARS%
-
 exec $MOZ_PROGRAM "$@"