diff --git a/include/vclib/math/transform.h b/include/vclib/math/transform.h
index a1851f8aa..a1d88e0b4 100644
--- a/include/vclib/math/transform.h
+++ b/include/vclib/math/transform.h
@@ -103,7 +103,7 @@ template<typename MatrixType, PointConcept PointType>
 void setTrasformMatrixScale(MatrixType& matrix, const PointType& scale)
 {
     matrix(0, 0) = scale[0];
-    matrix(1, 1) = scale[0];
+    matrix(1, 1) = scale[1];
     matrix(2, 2) = scale[2];
     matrix(3, 3) = 1;
 }