diff --git a/glm/gtc/matrix_transform.inl b/glm/gtc/matrix_transform.inl
index b1b19bfc..5195f350 100644
--- a/glm/gtc/matrix_transform.inl
+++ b/glm/gtc/matrix_transform.inl
@@ -261,8 +261,8 @@ namespace glm
 		Result[0][0] = w;
 		Result[1][1] = h;
 		Result[2][2] = (zFar + zNear) / (zFar - zNear);
-		Result[2][3] = valType(1);
-		Result[3][2] = -(valType(2) * zFar * zNear) / (zFar - zNear);
+		Result[2][3] = -valType(1);
+		Result[3][2] = (valType(2) * zFar * zNear) / (zFar - zNear);
 		return Result;
 	}