diff --git a/OpenRA.Game/Renderer.cs b/OpenRA.Game/Renderer.cs
index 33547da0ad..2fd1932ba6 100644
--- a/OpenRA.Game/Renderer.cs
+++ b/OpenRA.Game/Renderer.cs
@@ -231,7 +231,7 @@ namespace OpenRA
 			BeginFrame();
 
 			if (worldSheet == null)
-				throw new InvalidOperationException($"BeginWorld called before SetMaximumViewportSize has been set.");
+				throw new InvalidOperationException("BeginWorld called before SetMaximumViewportSize has been set.");
 
 			if (worldSprite == null || worldViewport.Size != lastWorldViewportSize)
 			{
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectAllUnitsHotkeyLogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectAllUnitsHotkeyLogic.cs
index ac6de27e6c..5bf72adc97 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectAllUnitsHotkeyLogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectAllUnitsHotkeyLogic.cs
@@ -52,7 +52,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic.Ingame
 				if (newSelection.Count > 1)
 					TextNotificationsManager.AddFeedbackLine($"Selected {newSelection.Count} units across screen.");
 				else
-					TextNotificationsManager.AddFeedbackLine($"Selected one unit across screen.");
+					TextNotificationsManager.AddFeedbackLine("Selected one unit across screen.");
 			}
 			else
 			{
@@ -62,7 +62,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic.Ingame
 				if (newSelection.Count > 1)
 					TextNotificationsManager.AddFeedbackLine($"Selected {newSelection.Count} units across map.");
 				else
-					TextNotificationsManager.AddFeedbackLine($"Selected one unit across map.");
+					TextNotificationsManager.AddFeedbackLine("Selected one unit across map.");
 			}
 
 			selection.Combine(world, newSelection, false, false);
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectUnitsByTypeHotkeyLogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectUnitsByTypeHotkeyLogic.cs
index 190209827b..40d82dcd3d 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectUnitsByTypeHotkeyLogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/SelectUnitsByTypeHotkeyLogic.cs
@@ -74,7 +74,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic.Ingame
 				if (newSelection.Count > 1)
 					TextNotificationsManager.AddFeedbackLine($"Selected {newSelection.Count} units across screen.");
 				else
-					TextNotificationsManager.AddFeedbackLine($"Selected one unit across screen.");
+					TextNotificationsManager.AddFeedbackLine("Selected one unit across screen.");
 			}
 			else
 			{
@@ -84,7 +84,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic.Ingame
 				if (newSelection.Count > 1)
 					TextNotificationsManager.AddFeedbackLine($"Selected {newSelection.Count} units across map.");
 				else
-					TextNotificationsManager.AddFeedbackLine($"Selected one unit across map.");
+					TextNotificationsManager.AddFeedbackLine("Selected one unit across map.");
 			}
 
 			selection.Combine(world, newSelection, true, false);