Index: change-namespace/ChangeNamespace.cpp
===================================================================
--- change-namespace/ChangeNamespace.cpp
+++ change-namespace/ChangeNamespace.cpp
@@ -697,8 +697,10 @@
   const auto *NsDecl = Result.Nodes.getNodeAs<NamespaceDecl>("ns_decl");
   // The namespace contains the forward declaration, so it must not be empty.
   assert(!NsDecl->decls_empty());
-  const auto Insertion = createInsertion(NsDecl->decls_begin()->getLocStart(),
-                                         Code, *Result.SourceManager);
+  const auto Insertion =
+      createInsertion(getLocAfterNamespaceLBrace(NsDecl, *Result.SourceManager,
+                                                 Result.Context->getLangOpts()),
+                      Code, *Result.SourceManager);
   InsertForwardDeclaration InsertFwd;
   InsertFwd.InsertionOffset = Insertion.getOffset();
   InsertFwd.ForwardDeclText = Insertion.getReplacementText().str();
Index: unittests/change-namespace/ChangeNamespaceTests.cpp
===================================================================
--- unittests/change-namespace/ChangeNamespaceTests.cpp
+++ unittests/change-namespace/ChangeNamespaceTests.cpp
@@ -351,11 +351,13 @@
 TEST_F(ChangeNamespaceTest, LeaveForwardDeclarationBehind) {
   std::string Code = "namespace na {\n"
                      "namespace nb {\n"
+                     "\n"
                      "class FWD;\n"
                      "class FWD2;\n"
                      "class A {\n"
                      "  FWD *fwd;\n"
                      "};\n"
+                     "\n"
                      "} // namespace nb\n"
                      "} // namespace na\n";
   std::string Expected = "namespace na {\n"
@@ -370,6 +372,7 @@
                          "class A {\n"
                          "  ::na::nb::FWD *fwd;\n"
                          "};\n"
+                         "\n"
                          "} // namespace y\n"
                          "} // namespace x\n";
   EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));