diff --git a/src/cascadia/TerminalControl/ControlCore.cpp b/src/cascadia/TerminalControl/ControlCore.cpp
index 53486269823..efcce89c84f 100644
--- a/src/cascadia/TerminalControl/ControlCore.cpp
+++ b/src/cascadia/TerminalControl/ControlCore.cpp
@@ -274,10 +274,8 @@ namespace winrt::Microsoft::Terminal::Control::implementation
             _updateAntiAliasingMode(_renderEngine.get());
 
             // GH#5098: Inform the engine of the opacity of the default text background.
-            if (_settings.UseAcrylic())
-            {
-                _renderEngine->SetDefaultTextBackgroundOpacity(::base::saturated_cast<float>(_settings.Opacity()));
-            }
+            // GH#11315: Always do this, even if they don't have acrylic on.
+            _renderEngine->SetDefaultTextBackgroundOpacity(::base::saturated_cast<float>(_settings.Opacity()));
 
             THROW_IF_FAILED(_renderEngine->Enable());
 
diff --git a/src/cascadia/TerminalControl/TermControl.cpp b/src/cascadia/TerminalControl/TermControl.cpp
index f90190a5d54..32bd45f6b9e 100644
--- a/src/cascadia/TerminalControl/TermControl.cpp
+++ b/src/cascadia/TerminalControl/TermControl.cpp
@@ -459,7 +459,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
             }
 
             // GH#5098: Inform the engine of the new opacity of the default text background.
-            _core.SetBackgroundOpacity(::base::saturated_cast<float>(appearance.Opacity()));
+            _core.SetBackgroundOpacity(appearance.Opacity());
         }
         else
         {