diff --git a/imgui.cpp b/imgui.cpp
index 5ddb01bd..c731909f 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -10975,7 +10975,7 @@ void ImGui::ShowTestWindow(bool* opened)
 
         if (ImGui::TreeNode("Multi-line Text Input"))
         {
-            static char text[1024*4] = "// F00F bug\nlabel:\n\tlock cmpxchg8b eax\n";
+            static char text[1024*16] = "// F00F bug\nlabel:\n\tlock cmpxchg8b eax\n";
             ImGui::PushItemWidth(-1.0f);
             ImGui::InputTextMultiline("##source", text, IM_ARRAYSIZE(text), ImVec2(0.f, ImGui::GetTextLineHeight() * 16), ImGuiInputTextFlags_AllowTabInput);
             ImGui::PopItemWidth();