Index: clang-tidy/modernize/UseDefaultMemberInitCheck.cpp
===================================================================
--- clang-tidy/modernize/UseDefaultMemberInitCheck.cpp
+++ clang-tidy/modernize/UseDefaultMemberInitCheck.cpp
@@ -255,17 +255,20 @@
   CharSourceRange InitRange =
       CharSourceRange::getCharRange(LParenEnd, Init->getRParenLoc());
 
+  bool ValueInit = isa<ImplicitValueInitExpr>(Init->getInit());
+  bool CanAssign = UseAssignment && (!ValueInit || !Init->getInit()->getType()->isEnumeralType());
+
   auto Diag =
       diag(Field->getLocation(), "use default member initializer for %0")
       << Field
-      << FixItHint::CreateInsertion(FieldEnd, UseAssignment ? " = " : "{")
+      << FixItHint::CreateInsertion(FieldEnd, CanAssign ? " = " : "{")
       << FixItHint::CreateInsertionFromRange(FieldEnd, InitRange);
 
-  if (UseAssignment && isa<ImplicitValueInitExpr>(Init->getInit()))
+  if (CanAssign && ValueInit)
     Diag << FixItHint::CreateInsertion(
         FieldEnd, getValueOfValueInit(Init->getInit()->getType()));
 
-  if (!UseAssignment)
+  if (!CanAssign)
     Diag << FixItHint::CreateInsertion(FieldEnd, "}");
 
   Diag << FixItHint::CreateRemoval(Init->getSourceRange());
Index: test/clang-tidy/modernize-use-default-member-init-assignment.cpp
===================================================================
--- test/clang-tidy/modernize-use-default-member-init-assignment.cpp
+++ test/clang-tidy/modernize-use-default-member-init-assignment.cpp
@@ -166,6 +166,14 @@
   // CHECK-FIXES: Enum e = Foo;
 };
 
+struct PositiveValueEnum {
+  PositiveValueEnum() : e() {}
+  // CHECK-FIXES: PositiveValueEnum()  {}
+  Enum e;
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: use default member initializer for 'e'
+  // CHECK-FIXES: Enum e{};
+};
+
 struct PositiveString {
   PositiveString() : s("foo") {}
   // CHECK-FIXES: PositiveString()  {}
Index: test/clang-tidy/modernize-use-default-member-init.cpp
===================================================================
--- test/clang-tidy/modernize-use-default-member-init.cpp
+++ test/clang-tidy/modernize-use-default-member-init.cpp
@@ -165,6 +165,14 @@
   // CHECK-FIXES: Enum e{Foo};
 };
 
+struct PositiveValueEnum {
+  PositiveValueEnum() : e() {}
+  // CHECK-FIXES: PositiveValueEnum()  {}
+  Enum e;
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: use default member initializer for 'e'
+  // CHECK-FIXES: Enum e{};
+};
+
 struct PositiveString {
   PositiveString() : s("foo") {}
   // CHECK-FIXES: PositiveString()  {}