diff --git a/src/Imath/ImathMatrix.h b/src/Imath/ImathMatrix.h
index be95b05c..3f2e4c36 100644
--- a/src/Imath/ImathMatrix.h
+++ b/src/Imath/ImathMatrix.h
@@ -2828,7 +2828,7 @@ Matrix33<T>::gjInverse () const IMATH_NOEXCEPT
 }
 
 template <class T>
-IMATH_CONSTEXPR14 inline const Matrix33<T>&
+IMATH_HOSTDEVICE IMATH_CONSTEXPR14 inline const Matrix33<T>&
 Matrix33<T>::invert (bool singExc)
 {
     *this = inverse (singExc);