diff --git a/bin/compile b/bin/compile
index 8885c080faf5bde10c253ba6b8e5c1d5f15ff05f..95ea01de8ac87a55c612ff9ca0e6a0ca8b1a0a0b 100755
--- a/bin/compile
+++ b/bin/compile
@@ -195,7 +195,7 @@ set -e
 #
 
 # Store new artifacts in cache.
-for dir in $VIRTUALENV_DIRS; do
+for dir in $CACHED_DIRS; do
   rm -rf $CACHE_DIR/$dir
   cp -R $dir $CACHE_DIR/
 done