diff --git a/clang/lib/Driver/ToolChains/Darwin.cpp b/clang/lib/Driver/ToolChains/Darwin.cpp
index 7b879f8cb65..3810a2ceec2 100644
--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -1196,7 +1196,7 @@ void Darwin::addProfileRTLibs(const ArgList &Args,
   // runtime's functionality.
   if (hasExportSymbolDirective(Args)) {
     if (ForGCOV) {
-      addExportedSymbol(CmdArgs, "___gcov_flush");
+      addExportedSymbol(CmdArgs, "___custom_llvm_gcov_flush");
       addExportedSymbol(CmdArgs, "_flush_fn_list");
       addExportedSymbol(CmdArgs, "_writeout_fn_list");
       addExportedSymbol(CmdArgs, "_reset_fn_list");
diff --git a/compiler-rt/lib/profile/GCDAProfiling.c b/compiler-rt/lib/profile/GCDAProfiling.c
index 57d8dec423c..2edfb6e19e9 100644
--- a/compiler-rt/lib/profile/GCDAProfiling.c
+++ b/compiler-rt/lib/profile/GCDAProfiling.c
@@ -644,7 +644,7 @@ void llvm_register_flush_function(fn_ptr fn) {
   fn_list_insert(&flush_fn_list, fn);
 }
 
-void __gcov_flush() {
+void __custom_llvm_gcov_flush() {
   struct fn_node* curr = flush_fn_list.head;
 
   while (curr) {