diff --git a/runcoms/zpreztorc b/runcoms/zpreztorc
index cc6ebb4b..adb3c288 100644
--- a/runcoms/zpreztorc
+++ b/runcoms/zpreztorc
@@ -96,6 +96,9 @@ zstyle ':prezto:module:editor' key-bindings 'emacs'
 # Set the search globbing flags.
 # zstyle ':prezto:module:history-substring-search' globbing-flags ''
 
+# Set the search prefixed.
+# zstyle ':prezto:module:history-substring-search' prefixed 'yes'
+
 #
 # macOS
 #