diff --git a/eng/native/configurecompiler.cmake b/eng/native/configurecompiler.cmake
index c22469f567b726..650ccaecac213b 100644
--- a/eng/native/configurecompiler.cmake
+++ b/eng/native/configurecompiler.cmake
@@ -417,7 +417,7 @@ if (CLR_CMAKE_HOST_UNIX)
         set(CMAKE_OSX_DEPLOYMENT_TARGET "11.0")
         add_compile_options(-arch arm64)
       elseif(CLR_CMAKE_HOST_ARCH_AMD64)
-        set(CMAKE_OSX_DEPLOYMENT_TARGET "10.13")
+      set(CMAKE_OSX_DEPLOYMENT_TARGET "10.14")
         add_compile_options(-arch x86_64)
       else()
         clr_unknown_arch()
diff --git a/src/coreclr/gc/unix/gcenv.unix.cpp b/src/coreclr/gc/unix/gcenv.unix.cpp
index 2a37c17f8c9f81..6319c519727e73 100644
--- a/src/coreclr/gc/unix/gcenv.unix.cpp
+++ b/src/coreclr/gc/unix/gcenv.unix.cpp
@@ -67,7 +67,6 @@
 #include <mach/mach_port.h>
 #include <mach/mach_host.h>
 
-#if defined(HOST_ARM64)
 #include <mach/task.h>
 #include <mach/vm_map.h>
 extern "C"
@@ -84,7 +83,6 @@ extern "C"
             abort();                                                        \
         }                                                                   \
     } while (false)
-#endif // defined(HOST_ARM64)
 
 #endif // __APPLE__
 
@@ -372,7 +370,7 @@ bool GCToOSInterface::Initialize()
     {
         s_flushUsingMemBarrier = TRUE;
     }
-#if !(defined(TARGET_OSX) && defined(HOST_ARM64))
+#ifndef TARGET_OSX
     else
     {
         assert(g_helperPage == 0);
@@ -404,7 +402,7 @@ bool GCToOSInterface::Initialize()
             return false;
         }
     }
-#endif // !(defined(TARGET_OSX) && defined(HOST_ARM64))
+#endif // !TARGET_OSX
 
     InitializeCGroup();
 
@@ -544,7 +542,7 @@ void GCToOSInterface::FlushProcessWriteBuffers()
         status = pthread_mutex_unlock(&g_flushProcessWriteBuffersMutex);
         assert(status == 0 && "Failed to unlock the flushProcessWriteBuffersMutex lock");
     }
-#if defined(TARGET_OSX) && defined(HOST_ARM64)
+#ifdef TARGET_OSX
     else
     {
         mach_msg_type_number_t cThreads;
@@ -570,7 +568,7 @@ void GCToOSInterface::FlushProcessWriteBuffers()
         machret = vm_deallocate(mach_task_self(), (vm_address_t)pThreads, cThreads * sizeof(thread_act_t));
         CHECK_MACH("vm_deallocate()", machret);
     }
-#endif // defined(TARGET_OSX) && defined(HOST_ARM64)
+#endif // TARGET_OSX
 }
 
 // Break into a debugger. Uses a compiler intrinsic if one is available,
diff --git a/src/coreclr/pal/src/thread/process.cpp b/src/coreclr/pal/src/thread/process.cpp
index 2b349a6c37b1c2..f31449fb19c3e8 100644
--- a/src/coreclr/pal/src/thread/process.cpp
+++ b/src/coreclr/pal/src/thread/process.cpp
@@ -85,7 +85,6 @@ SET_DEFAULT_DEBUG_CHANNEL(PROCESS); // some headers have code with asserts, so d
 #include <libproc.h>
 #include <sys/sysctl.h>
 #include <sys/posix_sem.h>
-#if defined(HOST_ARM64)
 #include <mach/task.h>
 #include <mach/vm_map.h>
 extern "C"
@@ -103,7 +102,6 @@ extern "C"
         }                                                                   \
     } while (false)
 
-#endif // defined(HOST_ARM64)
 #endif // __APPLE__
 
 #ifdef __NetBSD__
@@ -3472,7 +3470,7 @@ InitializeFlushProcessWriteBuffers()
         }
     }
 
-#if defined(TARGET_OSX) && defined(HOST_ARM64)
+#ifdef TARGET_OSX
     return TRUE;
 #else
     s_helperPage = static_cast<int*>(mmap(0, GetVirtualPageSize(), PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0));
@@ -3502,7 +3500,7 @@ InitializeFlushProcessWriteBuffers()
     }
 
     return status == 0;
-#endif // defined(TARGET_OSX) && defined(HOST_ARM64)
+#endif // TARGET_OSX
 }
 
 #define FATAL_ASSERT(e, msg) \
@@ -3552,7 +3550,7 @@ FlushProcessWriteBuffers()
         status = pthread_mutex_unlock(&flushProcessWriteBuffersMutex);
         FATAL_ASSERT(status == 0, "Failed to unlock the flushProcessWriteBuffersMutex lock");
     }
-#if defined(TARGET_OSX) && defined(HOST_ARM64)
+#ifdef TARGET_OSX
     else
     {
         mach_msg_type_number_t cThreads;
@@ -3578,7 +3576,7 @@ FlushProcessWriteBuffers()
         machret = vm_deallocate(mach_task_self(), (vm_address_t)pThreads, cThreads * sizeof(thread_act_t));
         CHECK_MACH("vm_deallocate()", machret);
     }
-#endif // defined(TARGET_OSX) && defined(HOST_ARM64)
+#endif // TARGET_OSX
 }
 
 /*++