diff --git a/Eigen/src/Core/arch/AltiVec/MathFunctions.h b/Eigen/src/Core/arch/AltiVec/MathFunctions.h
index d64d1335f..609e44326 100644
--- a/Eigen/src/Core/arch/AltiVec/MathFunctions.h
+++ b/Eigen/src/Core/arch/AltiVec/MathFunctions.h
@@ -20,7 +20,7 @@ namespace internal {
 
 EIGEN_INSTANTIATE_GENERIC_MATH_FUNCS_FLOAT(Packet4f)
 #ifdef EIGEN_VECTORIZE_VSX
-EIGEN_INSTANTIATE_GENERIC_MATH_FUNCS_FLOAT(Packet2d)
+EIGEN_INSTANTIATE_GENERIC_MATH_FUNCS_DOUBLE(Packet2d)
 #endif
 
 #ifdef EIGEN_VECTORIZE_VSX