diff --git a/src/common/impl/io_windows.c b/src/common/impl/io_windows.c
index d2b5018b1..7e04ca86c 100644
--- a/src/common/impl/io_windows.c
+++ b/src/common/impl/io_windows.c
@@ -128,12 +128,12 @@ static bool createSubfolders(wchar_t* fileName)
         if (!NT_SUCCESS(status))
         {
             if (closeRoot && hRoot != INVALID_HANDLE_VALUE)
-                CloseHandle(hRoot);
+                NtClose(hRoot);
             return false;
         }
 
         if (closeRoot && hRoot != INVALID_HANDLE_VALUE)
-            CloseHandle(hRoot);
+            NtClose(hRoot);
         hRoot = hNew;
         closeRoot = true;
 
@@ -141,7 +141,7 @@ static bool createSubfolders(wchar_t* fileName)
     }
 
     if (closeRoot && hRoot != INVALID_HANDLE_VALUE)
-        CloseHandle(hRoot);
+        NtClose(hRoot);
 
     return true;
 }
diff --git a/src/common/impl/processing_windows.c b/src/common/impl/processing_windows.c
index c78cc4a47..1098c6ab7 100644
--- a/src/common/impl/processing_windows.c
+++ b/src/common/impl/processing_windows.c
@@ -116,7 +116,7 @@ const char* ffProcessSpawn(char* const argv[], bool useStdErr, FFProcessHandle*
         &piProcInfo    // receives PROCESS_INFORMATION
     );
 
-    CloseHandle(hChildPipeWrite);
+    NtClose(hChildPipeWrite);
     if(!success)
     {
         if (GetLastError() == ERROR_FILE_NOT_FOUND)
@@ -124,7 +124,7 @@ const char* ffProcessSpawn(char* const argv[], bool useStdErr, FFProcessHandle*
         return "CreateProcessA() failed";
     }
 
-    CloseHandle(piProcInfo.hThread); // we don't need the thread handle
+    NtClose(piProcInfo.hThread); // we don't need the thread handle
     outHandle->pid   = piProcInfo.hProcess;
     outHandle->pipeRead  = hChildPipeRead;
     hChildPipeRead = INVALID_HANDLE_VALUE; // ownership transferred, don't close it
diff --git a/src/common/io.h b/src/common/io.h
index d287f2da9..efbabc37c 100644
--- a/src/common/io.h
+++ b/src/common/io.h
@@ -204,7 +204,7 @@ static inline bool wrapClose(FFNativeFD* pfd)
     #ifndef _WIN32
         close(*pfd);
     #else
-        CloseHandle(*pfd);
+        NtClose(*pfd);
     #endif
 
     return true;
diff --git a/src/common/thread.h b/src/common/thread.h
index deb4fba15..c7670452d 100644
--- a/src/common/thread.h
+++ b/src/common/thread.h
@@ -4,7 +4,7 @@
 
 #ifdef FF_HAVE_THREADS
     #if defined(_WIN32)
-        #include <handleapi.h>
+        #include <winternl.h>
         #include <synchapi.h>
         #include <process.h>
         #include <processthreadsapi.h>
@@ -18,16 +18,16 @@
         }
         #define FF_THREAD_ENTRY_DECL_WRAPPER(fn, paramType) static __stdcall unsigned fn ## ThreadMain (void* data) { fn((paramType)data); return 0; }
         #define FF_THREAD_ENTRY_DECL_WRAPPER_NOPARAM(fn) static __stdcall unsigned fn ## ThreadMain () { fn(); return 0; }
-        static inline void ffThreadDetach(FFThreadType thread) { CloseHandle(thread); }
+        static inline void ffThreadDetach(FFThreadType thread) { NtClose(thread); }
         static inline bool ffThreadJoin(FFThreadType thread, uint32_t timeout)
         {
             if (WaitForSingleObject(thread, timeout == 0 ? (DWORD) -1 : timeout) != 0 /*WAIT_OBJECT_0*/)
             {
                 TerminateThread(thread, (DWORD) -1);
-                CloseHandle(thread);
+                NtClose(thread);
                 return false;
             }
-            CloseHandle(thread);
+            NtClose(thread);
             return true;
         }
     #else
diff --git a/src/detection/bluetoothradio/bluetoothradio_windows.c b/src/detection/bluetoothradio/bluetoothradio_windows.c
index c725b24ac..3d3d27c87 100644
--- a/src/detection/bluetoothradio/bluetoothradio_windows.c
+++ b/src/detection/bluetoothradio/bluetoothradio_windows.c
@@ -98,7 +98,7 @@ const char* ffDetectBluetoothRadio(FFlist* devices /* FFBluetoothRadioResult */)
         device->connectable = ffBluetoothIsConnectable(hRadio);
         device->discoverable = ffBluetoothIsDiscoverable(hRadio);
 
-        CloseHandle(hRadio);
+        NtClose(hRadio);
     } while (ffBluetoothFindNextRadio(hFind, &hRadio));
 
     ffBluetoothFindRadioClose(hFind);