1 files changed, 2 insertions, 1 deletions

diff --git a/src/firejail/env.c b/src/firejail/env.c
index 2d5042100..c87bebced 100644
--- a/src/firejail/env.c
+++ b/src/firejail/env.c
@@ -274,7 +274,8 @@ static const char * const env_whitelist[] = {
         "LANG",
         "LANGUAGE",
         "LC_MESSAGES",
-        "PATH"
+        "PATH",
+        "DISPLAY"       // required by X11
 };
 
 static const char * const env_whitelist_sbox[] = {