diff --git a/OpenRA.Mods.Common/Traits/BodyOrientation.cs b/OpenRA.Mods.Common/Traits/BodyOrientation.cs
index 92c407f394..b10fdc89a0 100644
--- a/OpenRA.Mods.Common/Traits/BodyOrientation.cs
+++ b/OpenRA.Mods.Common/Traits/BodyOrientation.cs
@@ -78,7 +78,7 @@ namespace OpenRA.Mods.Common.Traits
 				if (qboi == null)
 				{
 					if (self.HasTrait<ISpriteBody>())
-						throw new InvalidOperationException("Actor" + self.Info.Name + "has a sprite body but no facing quantization."
+						throw new InvalidOperationException("Actor '" + self.Info.Name + "' has a sprite body but no facing quantization."
 							+ " Either add the QuantizeFacingsFromSequence trait or set custom QuantizedFacings on BodyOrientation.");
 					else
 						throw new InvalidOperationException("Actor type '" + self.Info.Name + "' does not define a quantized body orientation.");