diff --git a/src/modules/graphics/opengl/Quad.cpp b/src/modules/graphics/opengl/Quad.cpp
index 4d7166ad1..ee8264658 100644
--- a/src/modules/graphics/opengl/Quad.cpp
+++ b/src/modules/graphics/opengl/Quad.cpp
@@ -110,7 +110,7 @@ namespace opengl
 			if (x)
 				vertices[i].s = 1.0 - vertices[i].s;
 			if (y)
-				vertices[i].s = 1.0 - vertices[i].s;
+				vertices[i].t = 1.0 - vertices[i].t;
 		}
 	}