diff --git a/src/ZenThemesImporter.mjs b/src/ZenThemesImporter.mjs
index 7b1d957..5d3f7b5 100644
--- a/src/ZenThemesImporter.mjs
+++ b/src/ZenThemesImporter.mjs
@@ -12,6 +12,9 @@ var gZenStylesheetManager = {
   async writeStylesheet(path, themes) {
     let content = kZenStylesheetThemeHeader;
     for (let theme of themes) {
+      if (theme.disabled) {
+        continue;
+      }
       content += this.getThemeCSS(theme);
     }
     content += kenStylesheetFooter;