diff --git a/lib/theme-and-appearance.zsh b/lib/theme-and-appearance.zsh
index eb66caef4..12e08753c 100644
--- a/lib/theme-and-appearance.zsh
+++ b/lib/theme-and-appearance.zsh
@@ -6,9 +6,9 @@ export LSCOLORS="Gxfxcxdxbxegedabagacad"
 # Enable ls colors
 if [ "$DISABLE_LS_COLORS" != "true" ]
 then
-  UNAME=$(uname -s)
+
   # Find the option for using colors in ls, depending on the version: Linux or BSD
-  if [[ $UNAME =~ ".*BSD$" ]]; then
+  if [[ $(uname -s) =~ ".*BSD$" ]]; then
 
     print "BSD"
     # On NetBSD, test if "gls" (GNU ls) is installed (this one supports colors);