diff --git a/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h b/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h
index 226f425b4..cb18311e1 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h
@@ -102,7 +102,7 @@ EIGEN_ALWAYS_INLINE void outputVecColResults(Packet4f (&acc)[num_acc][size], flo
 template<Index num_acc, Index size = 4>
 EIGEN_ALWAYS_INLINE void outputVecResults(Packet4f (&acc)[num_acc][size], float *result, Packet4f pAlpha);
 
-template<typename RhsMapper, bool linear, std::enable_if_t<linear, bool>>
+template<typename RhsMapper, bool linear>
 EIGEN_ALWAYS_INLINE Packet8bf loadColData(RhsMapper& rhs, Index j);
 
 template<typename Packet>
diff --git a/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h b/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h
index 480a48abc..b8e1ab604 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h
@@ -521,16 +521,30 @@ EIGEN_ALWAYS_INLINE void multVecVSX(Packet4f (&acc)[num_acc][2], Packet4f (&a0)[
   }
 }
 
-template<typename RhsMapper, bool linear, std::enable_if_t<linear, bool> = true>
-EIGEN_ALWAYS_INLINE Packet8bf loadColData(RhsMapper& rhs, Index j)
+template<typename RhsMapper, bool linear>
+struct loadColData_impl
 {
-  return rhs.template loadPacket<Packet8bf>(j + 0);
-}
+  // linear == false
+  static EIGEN_ALWAYS_INLINE Packet8bf run(RhsMapper& rhs, Index j)
+  {
+    return pgather<bfloat16, Packet8bf>(&rhs(j + 0, 0), rhs.stride());
+  }
+};
 
-template<typename RhsMapper, bool linear, std::enable_if_t<!linear, bool> = true>
+template<typename RhsMapper>
+struct loadColData_impl<RhsMapper, true>
+{
+  // linear == true
+  static EIGEN_ALWAYS_INLINE Packet8bf run(RhsMapper& rhs, Index j)
+  {
+    return rhs.template loadPacket<Packet8bf>(j + 0);
+  }
+};
+
+template<typename RhsMapper, bool linear>
 EIGEN_ALWAYS_INLINE Packet8bf loadColData(RhsMapper& rhs, Index j)
 {
-  return pgather<bfloat16, Packet8bf>(&rhs(j + 0, 0), rhs.stride());
+  return loadColData_impl<RhsMapper, linear>::run(rhs, j);
 }
 
 template<Index num_acc, typename LhsMapper, typename RhsMapper, bool zero, bool linear>