diff --git a/themes/tiddlywiki/snowwhite/plugin.info b/themes/tiddlywiki/snowwhite/plugin.info
index 0b2784cba4..348802d783 100644
--- a/themes/tiddlywiki/snowwhite/plugin.info
+++ b/themes/tiddlywiki/snowwhite/plugin.info
@@ -5,5 +5,6 @@
 	"core-version": ">=5.0.0",
 	"plugin-type": "theme",
 	"description": "Emphasises individual tiddlers",
-	"dependents": ["$:/themes/tiddlywiki/vanilla"]
+	"dependents": ["$:/themes/tiddlywiki/vanilla"],
+	"plugin-priority": "0"
 }
diff --git a/themes/tiddlywiki/vanilla/plugin.info b/themes/tiddlywiki/vanilla/plugin.info
index 349fc2e637..2317900a16 100644
--- a/themes/tiddlywiki/vanilla/plugin.info
+++ b/themes/tiddlywiki/vanilla/plugin.info
@@ -4,5 +4,6 @@
 	"author": "JeremyRuston",
 	"core-version": ">=5.0.0",
 	"plugin-type": "theme",
-	"description": "Basic theme"
+	"description": "Basic theme",
+	"plugin-priority": "0"
 }