diff --git a/deps/nostalgia/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp b/deps/nostalgia/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
index ad047ab..f38496b 100644
--- a/deps/nostalgia/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
+++ b/deps/nostalgia/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
@@ -188,7 +188,7 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 		if (ImGui::IsKeyDown(ImGuiKey_ModCtrl)) {
 			if (ImGui::IsKeyPressed(ImGuiKey_A)) {
 				auto const&img = m_model.activeSubSheet();
-				m_model.setSelection({{}, {img.columns * TileWidth, img.rows * TileHeight}});
+				m_model.setSelection({{}, {img.columns * TileWidth - 1, img.rows * TileHeight - 1}});
 			} else if (ImGui::IsKeyPressed(ImGuiKey_G)) {
 				m_model.clearSelection();
 			}