diff --git a/zshrc b/zshrc
index 731d4a5..57f48b6 100644
--- a/zshrc
+++ b/zshrc
@@ -138,7 +138,7 @@ set_prompt() {
 		branch+="$(color $color_vcs_braces))"
 	fi
 
-	if [ "$(whoami)" != "$normal_user" ]; then
+	if [ "$USER" != "$normal_user" ]; then
 		local user="%n@"
 	fi