diff --git a/lib/urlenc/urlenc.go b/lib/urlenc/urlenc.go
index a409fbdcd..a7bc18cd4 100644
--- a/lib/urlenc/urlenc.go
+++ b/lib/urlenc/urlenc.go
@@ -20,15 +20,9 @@ var compressionDict = "->" +
 
 func init() {
 	var common []string
-	for k := range d2graph.StyleKeywords {
-		common = append(common, k)
-	}
 	for k := range d2graph.ReservedKeywords {
 		common = append(common, k)
 	}
-	for k := range d2graph.ReservedKeywordHolders {
-		common = append(common, k)
-	}
 	sort.Strings(common)
 	for _, k := range common {
 		compressionDict += k