diff --git a/llvm/include/llvm/module.modulemap b/llvm/include/llvm/module.modulemap
index 9272056195a0..f4af0931d5f5 100644
--- a/llvm/include/llvm/module.modulemap
+++ b/llvm/include/llvm/module.modulemap
@@ -196,6 +196,7 @@ module LLVM_Utils {
     // These are intended for textual inclusion.
     textual header "Support/ARMTargetParser.def"
     textual header "Support/Dwarf.def"
+    textual header "Support/MachO.def"
     textual header "Support/ELFRelocs/AArch64.def"
     textual header "Support/ELFRelocs/ARM.def"
     textual header "Support/ELFRelocs/AVR.def"