diff --git a/clang/tools/libclang/libclang.map b/clang/tools/libclang/libclang.map
index 932903bb41409f..aee46b14484572 100644
--- a/clang/tools/libclang/libclang.map
+++ b/clang/tools/libclang/libclang.map
@@ -49,6 +49,7 @@ LLVM_13 {
     clang_CompileCommand_getMappedSourceContent;
     clang_CompileCommand_getMappedSourcePath;
     clang_CompileCommand_getNumArgs;
+    clang_CompileCommand_getNumMappedSources;
     clang_CompileCommands_dispose;
     clang_CompileCommands_getCommand;
     clang_CompileCommands_getSize;