diff --git a/Eigen/src/Core/arch/AVX512/PacketMath.h b/Eigen/src/Core/arch/AVX512/PacketMath.h
index 1164f24b1..4832f2a3b 100644
--- a/Eigen/src/Core/arch/AVX512/PacketMath.h
+++ b/Eigen/src/Core/arch/AVX512/PacketMath.h
@@ -57,7 +57,7 @@ template<> struct packet_traits<float>  : default_packet_traits
     HasBlend = 0,
     HasSin = EIGEN_FAST_MATH,
     HasCos = EIGEN_FAST_MATH,
-#if EIGEN_GNUC_AT_LEAST(5, 3) || EIGEN_COMP_CLANG
+#if EIGEN_GNUC_AT_LEAST(5, 3) || (!EIGEN_COMP_GNUC_STRICT)
 #ifdef EIGEN_VECTORIZE_AVX512DQ
     HasLog = 1,
 #endif
@@ -77,7 +77,7 @@ template<> struct packet_traits<double> : default_packet_traits
     AlignedOnScalar = 1,
     size = 8,
     HasHalfPacket = 1,
-#if EIGEN_GNUC_AT_LEAST(5, 3)
+#if EIGEN_GNUC_AT_LEAST(5, 3) || (!EIGEN_COMP_GNUC_STRICT)
     HasSqrt = EIGEN_FAST_MATH,
     HasRsqrt = EIGEN_FAST_MATH,
 #endif
diff --git a/test/packetmath.cpp b/test/packetmath.cpp
index 04f93108f..4906f6eb0 100644
--- a/test/packetmath.cpp
+++ b/test/packetmath.cpp
@@ -568,6 +568,7 @@ template<typename Scalar,typename Packet> void packetmath_real()
       h.store(data2, internal::plog(h.load(data1)));
       VERIFY((numext::isinf)(data2[0]));
     }
+    if(PacketTraits::HasSqrt)
     {
       packet_helper<PacketTraits::HasSqrt,Packet> h;
       data1[0] = Scalar(-1.0f);