diff --git a/src/acorn/src/statement.js b/src/acorn/src/statement.js
index b704512002..23bd66f5f4 100755
--- a/src/acorn/src/statement.js
+++ b/src/acorn/src/statement.js
@@ -504,7 +504,7 @@ pp.parseClass = function(node, isStatement) {
       this.parsePropertyName(method)
     }
     method.kind = "method"
-    if (!method.computed && !isGenerator) {
+    if (!method.computed && !isGenerator && !isAsync) {
       if (method.key.type === "Identifier") {
         if (this.type !== tt.parenL && (method.key.name === "get" || method.key.name === "set")) {
           method.kind = method.key.name
diff --git a/test/core/fixtures/transformation/validation/async-constructor/actual.js b/test/core/fixtures/transformation/validation/async-constructor/actual.js
new file mode 100644
index 0000000000..70ffb97fb1
--- /dev/null
+++ b/test/core/fixtures/transformation/validation/async-constructor/actual.js
@@ -0,0 +1 @@
+class X { async constructor() {} }
diff --git a/test/core/fixtures/transformation/validation/async-constructor/options.json b/test/core/fixtures/transformation/validation/async-constructor/options.json
new file mode 100644
index 0000000000..2aa01942ac
--- /dev/null
+++ b/test/core/fixtures/transformation/validation/async-constructor/options.json
@@ -0,0 +1,4 @@
+{
+  "throws": "Illegal kind for constructor method",
+  "optional": ["es7.asyncFunctions"]
+}