diff --git a/src/vim9class.c b/src/vim9class.c
index 05d9afc..ce23160 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -2172,7 +2172,8 @@
 
     if (*name == '_')
     {
-	semsg(_(e_cannot_access_private_variable_str), m->ocm_name);
+	semsg(_(e_cannot_access_private_variable_str), m->ocm_name,
+							    cl->class_name);
 	return FAIL;
     }
 
@@ -2331,7 +2332,8 @@
 
 	if (*name == '_')
 	{
-	    semsg(_(e_cannot_access_private_variable_str), m->ocm_name);
+	    semsg(_(e_cannot_access_private_variable_str), m->ocm_name,
+							    cl->class_name);
 	    return FAIL;
 	}