diff --git a/clang-tools-extra/clangd/ClangdUnit.cpp b/clang-tools-extra/clangd/ClangdUnit.cpp
--- a/clang-tools-extra/clangd/ClangdUnit.cpp
+++ b/clang-tools-extra/clangd/ClangdUnit.cpp
@@ -67,8 +67,10 @@
 
   bool HandleTopLevelDecl(DeclGroupRef DG) override {
     for (Decl *D : DG) {
-      if (D->isFromASTFile())
+      auto &SM = D->getASTContext().getSourceManager();
+      if (!SM.isWrittenInMainFile(SM.getExpansionLoc(D->getLocation()))) {
         continue;
+      }
 
       // ObjCMethodDecl are not actually top-level decls.
       if (isa<ObjCMethodDecl>(D))
diff --git a/clang-tools-extra/clangd/unittests/ClangdUnitTests.cpp b/clang-tools-extra/clangd/unittests/ClangdUnitTests.cpp
--- a/clang-tools-extra/clangd/unittests/ClangdUnitTests.cpp
+++ b/clang-tools-extra/clangd/unittests/ClangdUnitTests.cpp
@@ -83,6 +83,26 @@
   EXPECT_THAT(AST.getLocalTopLevelDecls(), ElementsAre(DeclNamed("main")));
 }
 
+TEST(ClangdUnitTest, DoesNotGetIncludedTopDecls) {
+  TestTU TU;
+  TU.HeaderCode = R"cpp(
+    #define LL void foo() {}
+    template<class T>
+    struct H {
+      H() {}
+      LL
+    };
+  )cpp";
+  TU.Code = R"cpp(
+    int main() {
+      H<int> h;
+      h.foo();
+    }
+  )cpp";
+  auto AST = TU.build();
+  EXPECT_THAT(AST.getLocalTopLevelDecls(), ElementsAre(DeclNamed("main")));
+}
+
 TEST(ClangdUnitTest, TokensAfterPreamble) {
   TestTU TU;
   TU.AdditionalFiles["foo.h"] = R"(