diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 01cb7c9fea2..f2a34ae9a1a 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -6444,7 +6444,8 @@ namespace ts {
                 for (const declaration of symbol.declarations) {
                     if (declaration.kind === SyntaxKind.EnumDeclaration) {
                         for (const member of (<EnumDeclaration>declaration).members) {
-                            const memberType = getFreshTypeOfLiteralType(getLiteralType(getEnumMemberValue(member) || 0, enumCount, getSymbolOfNode(member)));
+                            const value = getEnumMemberValue(member);
+                            const memberType = getFreshTypeOfLiteralType(getLiteralType(value !== undefined ? value : 0, enumCount, getSymbolOfNode(member)));
                             getSymbolLinks(getSymbolOfNode(member)).declaredType = memberType;
                             memberTypeList.push(getRegularTypeOfLiteralType(memberType));
                         }