diff --git a/lib/c-promise.js b/lib/c-promise.js
index 46ab8b8..d2bf72a 100644
--- a/lib/c-promise.js
+++ b/lib/c-promise.js
@@ -1290,6 +1290,8 @@ class CPromise extends Promise {
     }
 
     static [_objectToCPromise](thing) {
+        if(!thing) return null;
+
         const convertMethod = thing[_toCPromise];
 
         if (typeof convertMethod === 'function') {
@@ -1308,7 +1310,7 @@ class CPromise extends Promise {
             return returnedValue;
         }
 
-        if (thing && typeof thing.then === 'function') {
+        if (typeof thing.then === 'function') {
             return new this((resolve, reject, {onCancel}) => {
                 if (typeof thing.cancel === 'function') {
                     onCancel(reason => {