diff --git a/zshrc b/zshrc
index 06186d0..d95928c 100644
--- a/zshrc
+++ b/zshrc
@@ -165,10 +165,11 @@ case `uname` in
       alias cls="printf '\ec'" || \
       alias cls="clear && printf '\e[3J'"
     alias ls='ls -F --color=auto'
-    which cgdb &> /dev/null && \
-      alias debug='cgdb --args' || \
-      which gdb &> /dev/null && \
-        alias debug='gdb --args'
+    if which cgdb &> /dev/null; then
+      alias debug='cgdb --args'
+    elif which gdb &> /dev/null; then
+      alias debug='gdb --args'
+    fi
     ;;
   Darwin)
     alias cls="clear && printf '\e[3J'"