diff --git a/src/libs/qmljs/qmljsreformatter.cpp b/src/libs/qmljs/qmljsreformatter.cpp
index bb2a0520721..c83ee11a357 100644
--- a/src/libs/qmljs/qmljsreformatter.cpp
+++ b/src/libs/qmljs/qmljsreformatter.cpp
@@ -1023,7 +1023,7 @@ protected:
         }
         out(ast->identifierToken);
         if (ast->initializer) {
-            if (ast->isVariableDeclaration())
+            if (ast->isVariableDeclaration() || ast->type == PatternElement::Binding)
                 out(" = ");
             accept(ast->initializer);
         }
@@ -1394,7 +1394,7 @@ protected:
     bool visit(FormalParameterList *ast) override
     {
         for (FormalParameterList *it = ast; it; it = it->next) {
-            out(it->element->bindingIdentifier.toString()); // TODO
+            accept(it->element);
             if (it->next)
                 out(", ");
         }
diff --git a/tests/auto/qml/reformatter/jssyntax.js b/tests/auto/qml/reformatter/jssyntax.js
index 2d46f597c80..34166825aaf 100644
--- a/tests/auto/qml/reformatter/jssyntax.js
+++ b/tests/auto/qml/reformatter/jssyntax.js
@@ -15,7 +15,7 @@ function foo(a, b) {
     x += 4
 }
 
-var foo = function (a, b) {}
+var foo = function (a, b = 0) {}
 
 function spread() {
     iterableObj = [1, 2]