diff --git a/src/common/utility/vectors.h b/src/common/utility/vectors.h
index d61a4f76e..23452f07b 100644
--- a/src/common/utility/vectors.h
+++ b/src/common/utility/vectors.h
@@ -1324,7 +1324,7 @@ public:
 		return xs_CRoundToInt(Degrees_ * (0x40000000 / 90.));
 	}
 
-	vec_t Degrees() const
+	constexpr vec_t Degrees() const
 	{
 		return Degrees_;
 	}