diff --git a/system/include/compat/ctype.h b/system/include/compat/ctype.h
deleted file mode 100644
index 891006d95dca7..0000000000000
--- a/system/include/compat/ctype.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef  _COMPAT_CTYPE_H_
-#define  _COMPAT_CTYPE_H_
-
-#define _CTYPE_A  0x00000400   /* Alpha */
-#define _CTYPE_C  0x00000002   /* Control */
-#define _CTYPE_D  0x00000800   /* Digit */
-#define _CTYPE_L  0x00000200   /* Lower */
-#define _CTYPE_P  0x00000004   /* Punct */
-#define _CTYPE_S  0x00002000   /* Space */
-#define _CTYPE_U  0x00000100   /* Upper */
-#define _CTYPE_X  0x00001000   /* X digit */
-#define _CTYPE_B  0x00000001   /* Blank */
-#define _CTYPE_R  0x00004000   /* Print */
-
-#include_next <ctype.h>
-
-#endif /* _COMPAT_CTYPE_H_ */
diff --git a/system/lib/libcxx/include/__locale b/system/lib/libcxx/include/__locale
index 5c060ab04c768..20c515287ea26 100644
--- a/system/lib/libcxx/include/__locale
+++ b/system/lib/libcxx/include/__locale
@@ -406,12 +406,12 @@ public:
     static const mask __regex_word = 0x4000; // 0x8000 and 0x0100 and 0x00ff are used
 # define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_PRINT
 # define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_ALPHA
-#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
 # ifdef __APPLE__
     typedef __uint32_t mask;
 # elif defined(__FreeBSD__)
     typedef unsigned long mask;
-# elif defined(__EMSCRIPTEN__) || defined(__NetBSD__)
+# elif defined(__NetBSD__)
     typedef unsigned short mask;
 # endif
     static const mask space  = _CTYPE_S;