diff --git a/clang-tools-extra/clangd/refactor/tweaks/SpecialMembers.cpp b/clang-tools-extra/clangd/refactor/tweaks/SpecialMembers.cpp
--- a/clang-tools-extra/clangd/refactor/tweaks/SpecialMembers.cpp
+++ b/clang-tools-extra/clangd/refactor/tweaks/SpecialMembers.cpp
@@ -103,7 +103,8 @@
     // Trigger only on class definitions.
     if (auto *N = Inputs.ASTSelection.commonAncestor())
       Class = const_cast<CXXRecordDecl *>(N->ASTNode.get<CXXRecordDecl>());
-    if (!Class || !Class->isThisDeclarationADefinition())
+    if (!Class || !Class->isThisDeclarationADefinition() ||
+        !(Class->isClass() || Class->isStruct()))
       return false;
 
     // Tweak is only available if some members are missing.
diff --git a/clang-tools-extra/clangd/unittests/CMakeLists.txt b/clang-tools-extra/clangd/unittests/CMakeLists.txt
--- a/clang-tools-extra/clangd/unittests/CMakeLists.txt
+++ b/clang-tools-extra/clangd/unittests/CMakeLists.txt
@@ -130,6 +130,7 @@
   tweaks/RawStringLiteralTests.cpp
   tweaks/RemoveUsingNamespaceTests.cpp
   tweaks/ShowSelectionTreeTests.cpp
+  tweaks/SpecialMembersTests.cpp
   tweaks/SwapIfBranchesTests.cpp
   tweaks/TweakTesting.cpp
   tweaks/TweakTests.cpp
diff --git a/clang-tools-extra/clangd/unittests/tweaks/SpecialMembersTests.cpp b/clang-tools-extra/clangd/unittests/tweaks/SpecialMembersTests.cpp
--- a/clang-tools-extra/clangd/unittests/tweaks/SpecialMembersTests.cpp
+++ b/clang-tools-extra/clangd/unittests/tweaks/SpecialMembersTests.cpp
@@ -7,17 +7,15 @@
 //===----------------------------------------------------------------------===//
 
 #include "TweakTesting.h"
-#include "gmock/gmock-matchers.h"
-#include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
 namespace clang {
 namespace clangd {
 namespace {
 
-TWEAK_TEST(SpecialMembers);
+TWEAK_TEST(DeclareCopyMove);
 
-TEST_F(SpecialMembersTest, Test) {
+TEST_F(DeclareCopyMoveTest, Test) {
   EXPECT_AVAILABLE("struct ^S {};");
   EXPECT_UNAVAILABLE("struct S { ^ };");
   EXPECT_UNAVAILABLE("union ^U {};");
@@ -27,17 +25,17 @@
                      "S &operator=(S&&); S &operator=(const S&);"
                      "};");
 
-  const char *Output = R"cpp(struct S{S(const S &) = default;
-  S(S &&) = default;
-  S &operator=(const S &) = default;
-  S &operator=(S &&) = default;
+  const char *Output = R"cpp(struct S{S(const S&) = default;
+S(S&&) = default;
+S &operator=(const S&) = default;
+S &operator=(S&&) = default;
 };)cpp";
   EXPECT_EQ(apply("struct ^S{};"), Output);
 
-  Output = R"cpp(struct S{S(const S &) = default;
-S(S &&) = default;
-S &operator=(const S &) = delete;
-S &operator=(S &&) = delete;
+  Output = R"cpp(struct S{S(const S&) = default;
+S(S&&) = default;
+S &operator=(const S&) = delete;
+S &operator=(S&&) = delete;
 int& ref;};)cpp";
   EXPECT_EQ(apply("struct ^S{int& ref;};"), Output);
 }