diff --git a/oh-my-zsh.sh b/oh-my-zsh.sh
index 3ea88e924..c7d26c64f 100644
--- a/oh-my-zsh.sh
+++ b/oh-my-zsh.sh
@@ -39,6 +39,10 @@ else
   source "$ZSH/themes/$ZSH_THEME.zsh-theme"
 fi
 
+# Compile zcompdump if necessary
+if [ ~/.zcompdump -nt ~/.zcompdump.zwc ]; then
+  zcompile ~/.zcompdump
+fi
 
 # Check for updates on initial load...
 if [ "$DISABLE_AUTO_UPDATE" = "true" ]