diff --git a/imgui.cpp b/imgui.cpp
index 5157a2cd..063ab487 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -4072,7 +4072,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         if (window_pos_center)
         {
             // Center (any sort of window)
-            SetWindowPos(ImMax(style.DisplaySafeAreaPadding, fullscreen_rect.GetCenter() - window->SizeFull * 0.5f));
+            SetWindowPos(window, ImMax(style.DisplaySafeAreaPadding, fullscreen_rect.GetCenter() - window->SizeFull * 0.5f), 0);
         }
         else if (flags & ImGuiWindowFlags_ChildMenu)
         {
@@ -4870,14 +4870,13 @@ static void SetWindowPos(ImGuiWindow* window, const ImVec2& pos, ImGuiSetCond co
 
 void ImGui::SetWindowPos(const ImVec2& pos, ImGuiSetCond cond)
 {
-    ImGuiWindow* window = GetCurrentWindow();
+    ImGuiWindow* window = GetCurrentWindowRead();
     SetWindowPos(window, pos, cond);
 }
 
 void ImGui::SetWindowPos(const char* name, const ImVec2& pos, ImGuiSetCond cond)
 {
-    ImGuiWindow* window = FindWindowByName(name);
-    if (window)
+    if (ImGuiWindow* window = FindWindowByName(name))
         SetWindowPos(window, pos, cond);
 }