diff --git a/deps/gbastartup/cstartup.cpp b/deps/gbastartup/cstartup.cpp
index 37dec185..b79f241b 100644
--- a/deps/gbastartup/cstartup.cpp
+++ b/deps/gbastartup/cstartup.cpp
@@ -6,16 +6,15 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include <ox/std/bit.hpp>
 #include <ox/std/heapmgr.hpp>
 
-#define MEM_EWRAM_BEGIN ox::bit_cast<char*>(0x02000000)
-#define MEM_EWRAM_END   ox::bit_cast<char*>(0x0203FFFF)
+#define MEM_EWRAM_BEGIN reinterpret_cast<char*>(0x02000000)
+#define MEM_EWRAM_END   reinterpret_cast<char*>(0x0203FFFF)
 
-#define HEAP_BEGIN ox::bit_cast<char*>(MEM_EWRAM_BEGIN)
+#define HEAP_BEGIN reinterpret_cast<char*>(MEM_EWRAM_BEGIN)
 // set size to half of EWRAM
 #define HEAP_SIZE ((MEM_EWRAM_END - MEM_EWRAM_BEGIN) / 2)
-#define HEAP_END  ox::bit_cast<char*>(MEM_EWRAM_BEGIN + HEAP_SIZE)
+#define HEAP_END  reinterpret_cast<char*>(MEM_EWRAM_BEGIN + HEAP_SIZE)
 
 extern void (*__preinit_array_start[]) (void);
 extern void (*__preinit_array_end[]) (void);