diff --git a/AK/Types.h b/AK/Types.h
index b49b597837..446e1c1e53 100644
--- a/AK/Types.h
+++ b/AK/Types.h
@@ -56,6 +56,9 @@ static_assert(sizeof(ssize_t) == sizeof(i32));
 
 typedef __PTRDIFF_TYPE__ ptrdiff_t;
 
+typedef __INTPTR_TYPE__ intptr_t;
+typedef __UINTPTR_TYPE__ uintptr_t;
+
 typedef u8 uint8_t;
 typedef u16 uint16_t;
 typedef u32 uint32_t;
diff --git a/Libraries/LibC/bits/stdint.h b/Libraries/LibC/bits/stdint.h
index 54be84a3e7..7c07ea72a3 100644
--- a/Libraries/LibC/bits/stdint.h
+++ b/Libraries/LibC/bits/stdint.h
@@ -69,8 +69,8 @@ typedef __INT_LEAST64_TYPE__ int_least64_t;
 #define __int64_t_defined 1
 #define __uint64_t_defined 1
 
-typedef __PTRDIFF_TYPE__ uintptr_t;
-typedef __PTRDIFF_TYPE__ intptr_t;
+typedef __UINTPTR_TYPE__ uintptr_t;
+typedef __INTPTR_TYPE__ intptr_t;
 
 typedef __UINTMAX_TYPE__ uintmax_t;
 #define UINTMAX_MAX __UINTMAX_MAX__