diff --git a/src/widgets.cpp b/src/widgets.cpp
index a90e10b..7d36a19 100644
--- a/src/widgets.cpp
+++ b/src/widgets.cpp
@@ -172,7 +172,7 @@ void eventDispatcher(Context &ctx, int32_t eventId, EventPayload *eventPayload)
 
 WidgetHandle Widgets::container(WidgetHandle parentId, const char *text, const Rect &rect) {
     auto &ctx = TinyUi::getContext();
-    if (ctx.mRoot != nullptr) {
+    if (ctx.mRoot == nullptr) {
         return WidgetHandle{WidgetHandle::InvalidId};
     }