diff --git a/core/src/HPX/Kokkos_HPX.hpp b/core/src/HPX/Kokkos_HPX.hpp
index 81ad696bdcf..c163e89e886 100644
--- a/core/src/HPX/Kokkos_HPX.hpp
+++ b/core/src/HPX/Kokkos_HPX.hpp
@@ -1293,13 +1293,14 @@ class ParallelScan<FunctorType, Kokkos::RangePolicy<Traits...>,
     execute_chunk(range.begin(), range.end(), update_sum, false);
 
     {
+#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
       // Since arrive_and_wait may yield and resume on another worker thread we
       // set in_parallel = false on the current thread before suspending and set
       // it again to true when we resume.
-#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
       Kokkos::Experimental::HPX::impl_not_in_parallel_scope p;
-#endif
+#else
       barrier.arrive_and_wait();
+#endif
     }
 
     if (t == 0) {
diff --git a/core/src/OpenMP/Kokkos_OpenMP_Instance.cpp b/core/src/OpenMP/Kokkos_OpenMP_Instance.cpp
index 32172fbc6c7..a7e672cb0f1 100644
--- a/core/src/OpenMP/Kokkos_OpenMP_Instance.cpp
+++ b/core/src/OpenMP/Kokkos_OpenMP_Instance.cpp
@@ -179,11 +179,12 @@ void OpenMPInternal::initialize(int thread_count) {
     Kokkos::abort(
         "Calling OpenMP::initialize after OpenMP::finalize is illegal\n");
   }
-
+#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
   if (omp_in_parallel()) {
     std::string msg("Kokkos::OpenMP::initialize ERROR : in parallel");
     Kokkos::Impl::throw_runtime_exception(msg);
   }
+#endif
 
   {
     if (Kokkos::show_warnings() && !std::getenv("OMP_PROC_BIND")) {
@@ -276,15 +277,15 @@ void OpenMPInternal::initialize(int thread_count) {
 
   m_initialized = true;
 }
-
 void OpenMPInternal::finalize() {
+#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
   if (omp_in_parallel()) {
     std::string msg("Kokkos::OpenMP::finalize ERROR ");
     if (this != &singleton()) msg.append(": not initialized");
     if (omp_in_parallel()) msg.append(": in parallel");
     Kokkos::Impl::throw_runtime_exception(msg);
   }
-
+#endif
   if (this == &singleton()) {
     auto const &instance = singleton();
     // Silence Cuda Warning
diff --git a/core/src/OpenMP/Kokkos_OpenMP_Instance.hpp b/core/src/OpenMP/Kokkos_OpenMP_Instance.hpp
index dc7e7339633..2ccd065edf1 100644
--- a/core/src/OpenMP/Kokkos_OpenMP_Instance.hpp
+++ b/core/src/OpenMP/Kokkos_OpenMP_Instance.hpp
@@ -53,7 +53,9 @@ inline bool execute_in_serial(OpenMP const& space = OpenMP()) {
 #else
   bool is_nested = static_cast<bool>(omp_get_nested());
 #endif
+#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
   return (OpenMP::in_parallel(space) && !(is_nested && (omp_get_level() == 1)));
+#endif
 }
 
 }  // namespace Impl
diff --git a/core/unit_test/CMakeLists.txt b/core/unit_test/CMakeLists.txt
index 7bbf72c2533..6c44d0e5621 100644
--- a/core/unit_test/CMakeLists.txt
+++ b/core/unit_test/CMakeLists.txt
@@ -709,12 +709,14 @@ if(Kokkos_ENABLE_HPX)
       hpx/TestHPX_IndependentInstancesRefCounting.cpp
       hpx/TestHPX_IndependentInstancesSynchronization.cpp
   )
+if(Kokkos_ENABLE_DEPRECATED_CODE_4)
   KOKKOS_ADD_EXECUTABLE_AND_TEST(
     CoreUnitTest_HPX_InParallel
     SOURCES
       UnitTestMainInit.cpp
       hpx/TestHPX_InParallel.cpp
   )
+  endif()
 endif()
 
 if(Kokkos_ENABLE_OPENMPTARGET)
diff --git a/core/unit_test/TestExecutionSpace.hpp b/core/unit_test/TestExecutionSpace.hpp
index 95fe6e59c22..4b3377a39d4 100644
--- a/core/unit_test/TestExecutionSpace.hpp
+++ b/core/unit_test/TestExecutionSpace.hpp
@@ -25,17 +25,7 @@ struct CheckClassWithExecutionSpaceAsDataMemberIsCopyable {
   Kokkos::DefaultExecutionSpace device;
   Kokkos::DefaultHostExecutionSpace host;
 
-  KOKKOS_FUNCTION void operator()(int, int& e) const {
-#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
-    // not actually doing anything useful, mostly checking that
-    // ExecutionSpace::in_parallel() is callable
-    if (static_cast<int>(device.in_parallel()) < 0) {
-      ++e;
-    }
-#else
-    e = 0;
-#endif
-  }
+  KOKKOS_FUNCTION void operator()(int, int& e) const { e += i; }
 
   CheckClassWithExecutionSpaceAsDataMemberIsCopyable() {
     int errors;
diff --git a/core/unit_test/hpx/TestHPX_InParallel.cpp b/core/unit_test/hpx/TestHPX_InParallel.cpp
index 6d12cf69912..ed3308e54b7 100644
--- a/core/unit_test/hpx/TestHPX_InParallel.cpp
+++ b/core/unit_test/hpx/TestHPX_InParallel.cpp
@@ -24,8 +24,6 @@
 
 namespace {
 
-#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
-
 inline constexpr int n = 1 << 10;
 
 TEST(hpx, in_parallel_for_range_policy) {
@@ -183,5 +181,4 @@ TEST(hpx, in_parallel_scan_range_policy) {
     ASSERT_EQ(a(i), 0);
   }
 }
-#endif
 }  // namespace