diff --git a/plugins.cc b/plugins.cc
index f7ebbf4..997b7cd 100644
--- a/plugins.cc
+++ b/plugins.cc
@@ -135,6 +135,7 @@ enum {
   FP_OPTPFOR,
   FP_SIMPLE8BRLE,
   FP_SIMDPACK,
+  FP_GROUPSIMPLE,
 #define C_LIBFOR		CODEC1
   LF_FOR,
   LF_FORX,