diff --git a/reactos/lib/sdk/crt/conio/getch.c b/reactos/lib/sdk/crt/conio/getch.c
index aee3cf5a46d..e167878ea66 100644
--- a/reactos/lib/sdk/crt/conio/getch.c
+++ b/reactos/lib/sdk/crt/conio/getch.c
@@ -31,7 +31,7 @@ int _getch(void)
          * ENABLE_ECHO_INPUT and ENABLE_LINE_INPUT if they're currently
          * switched on.
          */
-        ConsoleHandle = (HANDLE) _get_osfhandle(stdin->_file);
+        ConsoleHandle = (HANDLE)(ULONG_PTR) _get_osfhandle(stdin->_file);
         RestoreMode = GetConsoleMode(ConsoleHandle, &ConsoleMode) &&
                       (0 != (ConsoleMode &
                              (ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT)));
@@ -39,7 +39,7 @@ int _getch(void)
             SetConsoleMode(ConsoleHandle,
                            ConsoleMode & (~ (ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT)));
         }
-        ReadConsoleA((HANDLE)_get_osfhandle(stdin->_file),
+        ReadConsoleA((HANDLE)(ULONG_PTR)_get_osfhandle(stdin->_file),
 		             &c,
 		             1,
 		             &NumberOfCharsRead,
diff --git a/reactos/lib/sdk/crt/stdio/file.c b/reactos/lib/sdk/crt/stdio/file.c
index 3c26ac9a0ae..383a9f10e86 100644
--- a/reactos/lib/sdk/crt/stdio/file.c
+++ b/reactos/lib/sdk/crt/stdio/file.c
@@ -1291,7 +1291,7 @@ long CDECL _get_osfhandle(int fd)
   HANDLE hand = fdtoh(fd);
   TRACE(":fd (%d) handle (%p)\n",fd,hand);
 
-  return (long)hand;
+  return (long)(LONG_PTR)hand;
 }
 
 /*********************************************************************
@@ -1654,7 +1654,7 @@ int CDECL _open_osfhandle(long handle, int oflags)
   if (!(oflags & (_O_BINARY | _O_TEXT)))
       oflags |= _O_BINARY;
 
-  fd = alloc_fd((HANDLE)handle, split_oflags(oflags));
+  fd = alloc_fd((HANDLE)(LONG_PTR)handle, split_oflags(oflags));
   TRACE(":handle (%ld) fd (%d) flags 0x%08x\n", handle, fd, oflags);
   return fd;
 }