diff --git a/cmd/tools/vast/vast.v b/cmd/tools/vast/vast.v
index 9110dffd82..4acc01cbff 100644
--- a/cmd/tools/vast/vast.v
+++ b/cmd/tools/vast/vast.v
@@ -729,6 +729,7 @@ fn (t Tree) enum_decl(node ast.EnumDecl) &Node {
 	obj.add('comments', t.array_node_comment(node.comments))
 	obj.add_terse('attrs', t.array_node_attr(node.attrs))
 	obj.add_terse('typ', t.type_node(node.typ))
+	obj.add_terse('enum_typ', t.type_node(node.enum_typ))
 	return obj
 }
 
diff --git a/vlib/v/ast/ast.v b/vlib/v/ast/ast.v
index 47decb8b57..f760b1db2f 100644
--- a/vlib/v/ast/ast.v
+++ b/vlib/v/ast/ast.v
@@ -1475,6 +1475,8 @@ pub:
 	typ              Type        // the default is `int`; can be changed by `enum Big as u64 { a = 5 }`
 	typ_pos          token.Pos
 	pos              token.Pos
+pub mut:
+	enum_typ Type
 }
 
 pub struct AliasTypeDecl {
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index fed581f221..4fe72a2307 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -2161,6 +2161,7 @@ fn (mut c Checker) enum_decl(mut node ast.EnumDecl) {
 			}
 		}
 	}
+	node.enum_typ = c.table.find_type_idx(node.name)
 }
 
 fn (mut c Checker) check_enum_field_integer_literal(expr ast.IntegerLiteral, is_signed bool, is_multi_allowed bool,
diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index a81af0e02d..4fcab54a8c 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -4771,7 +4771,7 @@ fn (mut g Gen) enum_decl(node ast.EnumDecl) {
 		}
 		return
 	}
-	if g.pref.skip_unused && node.typ.idx() !in g.table.used_features.used_syms {
+	if g.pref.skip_unused && node.enum_typ !in g.table.used_features.used_syms {
 		return
 	}
 	g.enum_typedefs.writeln('')
diff --git a/vlib/v/markused/walker.v b/vlib/v/markused/walker.v
index 690a797d3f..c8d9abc209 100644
--- a/vlib/v/markused/walker.v
+++ b/vlib/v/markused/walker.v
@@ -846,7 +846,7 @@ fn (mut w Walker) expr(node_ ast.Expr) {
 					w.expr(filtered[0].expr)
 				}
 			}
-			w.mark_by_sym_name(node.enum_name)
+			w.mark_by_type(node.typ)
 		}
 		ast.LockExpr {
 			w.uses_lock = true