diff --git a/dist/redolent-testing.js b/dist/redolent-testing.js
index 127b144..a008716 100644
--- a/dist/redolent-testing.js
+++ b/dist/redolent-testing.js
@@ -118,8 +118,9 @@ function redolent (fn, opts) {
 
       opts.args = isAsyncFn ? opts.args.concat(done) : opts.args;
       var syncResult = fn.apply(opts.context, opts.args);
+      var xPromise = isAsyncFn && !called && isPromise(syncResult, opts.Promise);
 
-      if (!isAsyncFn && !called) {
+      if ((!isAsyncFn && !called) || xPromise) {
         resolve(syncResult);
       }
     });
@@ -134,4 +135,13 @@ function normalize (promise, Ctor) {
   return promise
 }
 
+function isPromise (val, Promize$$1) {
+  return val instanceof Promize$$1 || (
+    val !== null &&
+    typeof val === 'object' &&
+    typeof val.then === 'function' &&
+    typeof val.catch === 'function'
+  )
+}
+
 module.exports = redolent;
diff --git a/dist/redolent.common.js b/dist/redolent.common.js
index 01e3996..b77f735 100644
--- a/dist/redolent.common.js
+++ b/dist/redolent.common.js
@@ -392,8 +392,9 @@ function redolent (fn, opts) {
 
       opts.args = isAsyncFn ? opts.args.concat(done) : opts.args;
       var syncResult = fn.apply(opts.context, opts.args);
+      var xPromise = isAsyncFn && !called && isPromise(syncResult, opts.Promise);
 
-      if (!isAsyncFn && !called) {
+      if ((!isAsyncFn && !called) || xPromise) {
         resolve(syncResult);
       }
     });
@@ -408,4 +409,13 @@ function normalize (promise, Ctor) {
   return promise
 }
 
+function isPromise (val, Promize$$1) {
+  return val instanceof Promize$$1 || (
+    val !== null &&
+    typeof val === 'object' &&
+    typeof val.then === 'function' &&
+    typeof val.catch === 'function'
+  )
+}
+
 module.exports = redolent;
diff --git a/dist/redolent.es.js b/dist/redolent.es.js
index 61c8318..341b487 100644
--- a/dist/redolent.es.js
+++ b/dist/redolent.es.js
@@ -388,8 +388,9 @@ function redolent (fn, opts) {
 
       opts.args = isAsyncFn ? opts.args.concat(done) : opts.args;
       var syncResult = fn.apply(opts.context, opts.args);
+      var xPromise = isAsyncFn && !called && isPromise(syncResult, opts.Promise);
 
-      if (!isAsyncFn && !called) {
+      if ((!isAsyncFn && !called) || xPromise) {
         resolve(syncResult);
       }
     });
@@ -404,4 +405,13 @@ function normalize (promise, Ctor) {
   return promise
 }
 
+function isPromise (val, Promize$$1) {
+  return val instanceof Promize$$1 || (
+    val !== null &&
+    typeof val === 'object' &&
+    typeof val.then === 'function' &&
+    typeof val.catch === 'function'
+  )
+}
+
 export default redolent;
diff --git a/index.js b/index.js
index 954a4f6..ebf864f 100644
--- a/index.js
+++ b/index.js
@@ -118,8 +118,9 @@ export default function redolent (fn, opts) {
 
       opts.args = isAsyncFn ? opts.args.concat(done) : opts.args
       var syncResult = fn.apply(opts.context, opts.args)
+      var xPromise = isAsyncFn && !called && isPromise(syncResult, opts.Promise)
 
-      if (!isAsyncFn && !called) {
+      if ((!isAsyncFn && !called) || xPromise) {
         resolve(syncResult)
       }
     })
@@ -133,3 +134,12 @@ function normalize (promise, Ctor) {
   promise.___customPromise = Boolean(Ctor.___customPromise)
   return promise
 }
+
+function isPromise (val, Promize) {
+  return val instanceof Promize || (
+    val !== null &&
+    typeof val === 'object' &&
+    typeof val.then === 'function' &&
+    typeof val.catch === 'function'
+  )
+}
diff --git a/test.js b/test.js
index c8823e8..71ca906 100644
--- a/test.js
+++ b/test.js
@@ -158,6 +158,17 @@ function factory (promisify) {
       })
       .catch(done)
   })
+
+  test('should work if `done` is present, but return a promise', function (done) {
+    var fn = promisify(function (xxx, done) {
+      return Pinkie.resolve(100 + xxx)
+    })
+
+    return fn(200).then(function (val) {
+      test.strictEqual(val, 300)
+      done()
+    }, done).catch(done)
+  })
 }
 
 if (semver.lt(process.version, '0.12.0')) {