diff --git a/after/syntax/zsh.vim b/after/syntax/zsh.vim
index ce5f4f5..2c5f627 100644
--- a/after/syntax/zsh.vim
+++ b/after/syntax/zsh.vim
@@ -1,3 +1,6 @@
-syn keyword zshOption interactivecomments INTERACTIVE_COMMENTS
-syn region zshBlock matchgroup=zshParans start="{" end="}" transparent fold
-hi link zshParans Delimiter
+syn region zshParentheses matchgroup=Delimiter start='(' skip='\\)' end=')' transparent fold
+syn region zshParentheses matchgroup=Delimiter start="{" end="}" transparent fold
+
+" TODO: Correctly highlight associative array assignment, see zshVariableDef.
+
+hi link zshOperator Operator