diff --git a/node.gyp b/node.gyp
index 781dcee81adbb3..9389aa42464038 100644
--- a/node.gyp
+++ b/node.gyp
@@ -298,7 +298,7 @@
           '-Wl,-bnoerrmsg',
         ],
       }],
-      ['OS in ("linux", "mac") and llvm_version != "0.0"', {
+      ['OS == "linux" and llvm_version != "0.0"', {
         'libraries': ['-latomic'],
       }],
     ],