diff --git a/lld/MachO/CMakeLists.txt b/lld/MachO/CMakeLists.txt
index 3cd94ced75cc0..72631f11511bf 100644
--- a/lld/MachO/CMakeLists.txt
+++ b/lld/MachO/CMakeLists.txt
@@ -59,6 +59,7 @@ add_lld_library(lldMachO
   LINK_LIBS
   lldCommon
   ${LLVM_PTHREAD_LIB}
+  ${LLVM_ATOMIC_LIB}
 
   DEPENDS
   MachOOptionsTableGen