diff --git a/lib/bunyan.js b/lib/bunyan.js
index 5442826..cf60fea 100644
--- a/lib/bunyan.js
+++ b/lib/bunyan.js
@@ -967,8 +967,8 @@ function mkLogEmitter(minLevel) {
                 } else {
                     msgArgs = Array.prototype.slice.call(args, 1);
                 }
-            } else if (typeof (args[0]) !== 'object' && args[0] !== null ||
-                       Array.isArray(args[0])) {
+            } else if (typeof (args[0]) !== 'object' ||
+                    Array.isArray(args[0])) {
                 // `log.<level>(msg, ...)`
                 fields = null;
                 msgArgs = Array.prototype.slice.call(args);