diff --git a/deps/v8/build/common.gypi b/deps/v8/build/common.gypi
index 4e896e019a8..6b6e00272d9 100644
--- a/deps/v8/build/common.gypi
+++ b/deps/v8/build/common.gypi
@@ -184,6 +184,9 @@
           }],
         ],
       }],
+      ['OS=="solaris"', {
+        'defines': [ '__C99FEATURES__=1' ], # isinf() etc.
+      }],
     ],
     'configurations': {
       'Debug': {
diff --git a/deps/v8/tools/gyp/v8-node.gyp b/deps/v8/tools/gyp/v8-node.gyp
index f2b3a337bd8..3b067a5f560 100644
--- a/deps/v8/tools/gyp/v8-node.gyp
+++ b/deps/v8/tools/gyp/v8-node.gyp
@@ -3,11 +3,4 @@
     '../../build/common.gypi',
     'v8.gyp'
   ],
-  'target_defaults': {
-    'conditions': [
-      [ 'OS=="solaris"', {
-        'defines': [ '__C99FEATURES__=1' ],
-      }],
-    ],
-  },
 }