diff --git a/netlist.h b/netlist.h
index 02836b23f..f02970b86 100644
--- a/netlist.h
+++ b/netlist.h
@@ -76,7 +76,7 @@ class NetEvTrig;
 class NetEvWait;
 class PExpr;
 class PFunction;
-class enum_type_t;
+struct enum_type_t;
 class netclass_t;
 class netdarray_t;
 class netparray_t;
diff --git a/parse_api.h b/parse_api.h
index 8101e4295..a9de02dcf 100644
--- a/parse_api.h
+++ b/parse_api.h
@@ -31,7 +31,7 @@ class Module;
 class PPackage;
 class PUdp;
 class data_type_t;
-class enum_type_t;
+struct enum_type_t;
 
 /*
  * These are maps of the modules and primitives parsed from the