diff --git a/source/html/epub-doc.c b/source/html/epub-doc.c
index f764242..83888dc 100644
--- a/source/html/epub-doc.c
+++ b/source/html/epub-doc.c
@@ -692,10 +692,12 @@ epub_parse_header(fz_context *ctx, epub_document *doc)
 	epub_chapter **tailp;
 	int i;
 
+	#ifdef GENTOO_MUPDF_DRM
	if (fz_has_archive_entry(ctx, zip, "META-INF/rights.xml"))
 		fz_throw(ctx, FZ_ERROR_GENERIC, "EPUB is locked by DRM");
 	if (fz_has_archive_entry(ctx, zip, "META-INF/encryption.xml"))
 		fz_throw(ctx, FZ_ERROR_GENERIC, "EPUB is locked by DRM");
+	#endif
 
 	fz_var(buf);
 	fz_var(container_xml);