diff --git a/lib/layouts/pdfcomment.module b/lib/layouts/pdfcomment.module
index 0adf97888f..12b4584ea1 100644
--- a/lib/layouts/pdfcomment.module
+++ b/lib/layouts/pdfcomment.module
@@ -1,4 +1,4 @@
-#\DeclareLyXModule[datetime,fmtcount]{PDF Comments}
+#\DeclareLyXModule[datetime.sty,fmtcount.sty]{PDF Comments}
 #DescriptionBegin
 #Provides various kinds of annotations for the PDF output. The module uses
 #the pdfcomment package. Please consult the package documentation for details.