diff --git a/zshrc.org b/zshrc.org
index 8f986a3..499515e 100644
--- a/zshrc.org
+++ b/zshrc.org
@@ -83,15 +83,15 @@ The other two swap between build and src dirs on my local git checkout
   kde-current-activity-name () {
     qdbus >/dev/null && kactivities-cli --current-activity | awk {'print $3'}
   }
-  kde_src_basedir="/scratch/src/kde"
-  kde_build_basedir="/scratch/src/kde/build"
+  local kde_src_basedir="/scratch/src/kde"
+  local kde_build_basedir="/scratch/src/kde/build"
 
   kde-cd-build () {
-      cd $(pwd | sed -e "s+$kde_src_basedir+$kde_build_basedir+")
+      cd ${PWD/$kde_src_basedir/$kde_build_basedir/}
   }
 
   kde-cd-src () {
-      cd $(pwd | sed -e "s+$kde_build_basedir+$kde_src_basedir+")
+      cd ${PWD/$kde_build_basedir/$kde_src_basedir/}
   }
 #+end_src
 
@@ -99,8 +99,6 @@ The other two swap between build and src dirs on my local git checkout
 source ~/scripts/kde-utils.sh
 #+end_src
 
-**** TODO See if we can use zsh expansion instead of sed
-
 *** Android helpers                                                  :daily:
 
 These are various helpers to drive my current Android phone when connected to the box.