diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
index ea06f359b0372111ffead8b54dd26027ba3190d4..ad740dda7283e87c6d543f7686c1f4932f3e0ab2 100644
--- a/llvm/cmake/modules/AddLLVM.cmake
+++ b/llvm/cmake/modules/AddLLVM.cmake
@@ -37,7 +37,7 @@ function(add_llvm_symbol_exports target_name export_file)
 
     add_custom_command(OUTPUT symbol.def
       COMMAND ${CMAKE_COMMAND} -E echo "EXPORTS" > symbol.def
-      COMMAND ${CAT} ${export_file} >> symbol.def
+      COMMAND ${CAT} "${export_file}" >> symbol.def
       DEPENDS ${export_file}
       VERBATIM
       COMMENT "Creating export file for ${target_name}")