diff --git a/src/Kokkos_ArithTraits.hpp b/src/Kokkos_ArithTraits.hpp
index c8a20f4e96..f96ffc49c3 100644
--- a/src/Kokkos_ArithTraits.hpp
+++ b/src/Kokkos_ArithTraits.hpp
@@ -856,7 +856,7 @@ class ArithTraits<float> {
   static KOKKOS_FORCEINLINE_FUNCTION float infinity() { return HUGE_VALF; }
 
   static KOKKOS_FORCEINLINE_FUNCTION bool isInf (const float x) {
-    #ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
+#ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
     using std::isinf;
 #elif KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_SYCL
     using sycl::isinf
@@ -864,7 +864,7 @@ class ArithTraits<float> {
     return isinf (x);
   }
   static KOKKOS_FORCEINLINE_FUNCTION bool isNan (const float x) {
-    #ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
+#ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
     using std::isnan;
 #elif KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_SYCL
     using sycl::isnan
@@ -1034,6 +1034,7 @@ class ArithTraits<std::complex<RealFloatType> > {
     return std::complex<RealFloatType> (ArithTraits<mag_type>::infinity (), ArithTraits<mag_type>::infinity ());
   }
 
+#ifdef KOKKOS_ENABLE_SYCL
   template <typename Dummy = RealFloatType>
   static bool isInf(const std::complex<Dummy>& x) {
 #ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
@@ -1043,13 +1044,20 @@ class ArithTraits<std::complex<RealFloatType> > {
 #endif
     return isinf (real (x)) || isinf (imag (x));
   }
-#ifdef KOKKOS_ENABLE_SYCL
   template <>
   static bool isInf<long double>(const std::complex<long double>& x) {
     Kokkos::abort("isInf not available for std::complex<long double>!\n");
     return true;
   }
+#else
+  static bool isInf(const std::complex<RealFloatType>& x) {
+#ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
+    using std::isinf;
+#endif
+    return isinf (real (x)) || isinf (imag (x));
+  }
 #endif
+#ifdef KOKKOS_ENABLE_SYCL
   template <typename Dummy = RealFloatType>
   static bool isNan(const std::complex<Dummy>& x) {
 #ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
@@ -1059,12 +1067,18 @@ class ArithTraits<std::complex<RealFloatType> > {
 #endif
     return isnan (real (x)) || isnan (imag (x));
   }
-#ifdef KOKKOS_ENABLE_SYCL
   template <>
   static bool isNan<long double>(const std::complex<long double>& x) {
     Kokkos::abort("isNan not available for std::complex<long double>!\n");
     return true;
   }
+#else
+  static bool isNan(const std::complex<RealFloatType>& x) {
+#ifdef KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST
+    using std::isnan;
+#endif
+    return isnan (real (x)) || isnan (imag (x));
+  }
 #endif
   static mag_type abs (const std::complex<RealFloatType>& x) {
     return std::abs (x);