diff --git a/reactos/boot/freeldr/freeldr/freeldr.c b/reactos/boot/freeldr/freeldr/freeldr.c
index 77a164a374a..6d069b63573 100644
--- a/reactos/boot/freeldr/freeldr/freeldr.c
+++ b/reactos/boot/freeldr/freeldr/freeldr.c
@@ -57,6 +57,8 @@ VOID BootMain(LPSTR CmdLine)
 }
 
 // We need to emulate these, because the original ones don't work in freeldr
+// These functions are here, because they need to be in the main compilation unit
+// and cannot be in a library.
 int __cdecl wctomb(char *mbchar, wchar_t wchar)
 {
     *mbchar = (char)wchar;
@@ -68,3 +70,10 @@ int __cdecl mbtowc (wchar_t *wchar, const char *mbchar, size_t count)
     *wchar = (wchar_t)*mbchar;
     return 1;
 }
+
+// The wctype table is 144 KB, too much for poor freeldr
+int iswctype(wint_t wc, wctype_t wctypeFlags)
+{
+    return _isctype((char)wc, wctypeFlags);
+}
+
diff --git a/reactos/lib/sdk/crt/crt.cmake b/reactos/lib/sdk/crt/crt.cmake
index 05479fb94b5..01f11982cab 100644
--- a/reactos/lib/sdk/crt/crt.cmake
+++ b/reactos/lib/sdk/crt/crt.cmake
@@ -252,6 +252,8 @@ list(APPEND CRT_SOURCE
     string/atoi64.c
     string/atol.c
     string/ctype.c
+    string/iswctype.c
+    string/is_wctype.c
     string/itoa.c
     string/itow.c
     string/scanf.c
diff --git a/reactos/lib/sdk/crt/libcntpr.cmake b/reactos/lib/sdk/crt/libcntpr.cmake
index b69636ec764..5723d993344 100644
--- a/reactos/lib/sdk/crt/libcntpr.cmake
+++ b/reactos/lib/sdk/crt/libcntpr.cmake
@@ -27,6 +27,8 @@ list(APPEND LIBCNTPR_SOURCE
     search/lfind.c
     stdlib/qsort.c
     string/ctype.c
+    string/iswctype.c
+    string/is_wctype.c
     string/scanf.c
     string/strcspn.c
     string/stricmp.c
@@ -182,7 +184,7 @@ else()
 endif()
 
 add_library(libcntpr ${LIBCNTPR_SOURCE})
-add_target_compile_definitions(libcntpr 
+add_target_compile_definitions(libcntpr
     NO_RTL_INLINES
     _NTSYSTEM_
     _NTDLLBUILD_
diff --git a/reactos/lib/sdk/crt/string/ctype.c b/reactos/lib/sdk/crt/string/ctype.c
index 7c5188570f9..a28fd2058f1 100644
--- a/reactos/lib/sdk/crt/string/ctype.c
+++ b/reactos/lib/sdk/crt/string/ctype.c
@@ -584,24 +584,6 @@ int _isctype (int c, int ctypeFlags)
   return (_pctype[(unsigned char)(c & 0xFF)] & ctypeFlags);
 }
 
-/*
- * @implemented
- */
-int iswctype(wint_t wc, wctype_t wctypeFlags)
-{
-   return (wine_wctype_table[wine_wctype_table[wc >> 8] + (wc & 0xff)] & wctypeFlags);
-}
-
-/*
- * obsolete
- *
- * @implemented
- */
-int is_wctype(wint_t wc, wctype_t wctypeFlags)
-{
-   return (wine_wctype_table[wine_wctype_table[wc >> 8] + (wc & 0xff)] & wctypeFlags);
-}
-
 /*
  * @implemented
  */
diff --git a/reactos/lib/sdk/crt/string/is_wctype.c b/reactos/lib/sdk/crt/string/is_wctype.c
new file mode 100644
index 00000000000..030900010de
--- /dev/null
+++ b/reactos/lib/sdk/crt/string/is_wctype.c
@@ -0,0 +1,13 @@
+#include <string.h>
+
+extern const unsigned short wine_wctype_table[];
+
+/*
+ * obsolete
+ *
+ * @implemented
+ */
+int is_wctype(wint_t wc, wctype_t wctypeFlags)
+{
+   return iswctype(wc, wctypeFlags);
+}
diff --git a/reactos/lib/sdk/crt/string/iswctype.c b/reactos/lib/sdk/crt/string/iswctype.c
new file mode 100644
index 00000000000..94b59e6ba74
--- /dev/null
+++ b/reactos/lib/sdk/crt/string/iswctype.c
@@ -0,0 +1,12 @@
+#include <string.h>
+
+extern const unsigned short wine_wctype_table[];
+
+/*
+ * @implemented
+ */
+int iswctype(wint_t wc, wctype_t wctypeFlags)
+{
+    return (wine_wctype_table[wine_wctype_table[wc >> 8] + (wc & 0xff)] & wctypeFlags);
+}
+