diff --git a/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp b/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
index fff4283277ea..fe4941a5ba1a 100644
--- a/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
+++ b/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
@@ -15,7 +15,7 @@
 
 #include "clang/Format/Format.h"
 
-extern "C" void TestOneInput(uint8_t *data, size_t size) {
+extern "C" void LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
   // FIXME: fuzz more things: different styles, different style features.
   std::string s((const char *)data, size);
   auto Style = getGoogleStyle(clang::format::FormatStyle::LK_Cpp);
diff --git a/clang/tools/clang-fuzzer/ClangFuzzer.cpp b/clang/tools/clang-fuzzer/ClangFuzzer.cpp
index f58b0cece24b..17ef0521e3c3 100644
--- a/clang/tools/clang-fuzzer/ClangFuzzer.cpp
+++ b/clang/tools/clang-fuzzer/ClangFuzzer.cpp
@@ -20,7 +20,7 @@
 
 using namespace clang;
 
-extern "C" void TestOneInput(uint8_t *data, size_t size) {
+extern "C" void LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
   std::string s((const char *)data, size);
   llvm::opt::ArgStringList CC1Args;
   CC1Args.push_back("-cc1");