diff --git a/reactos/lib/ntdll/def/ntdll.def b/reactos/lib/ntdll/def/ntdll.def
index 8fffa77d02c..30406239e74 100644
--- a/reactos/lib/ntdll/def/ntdll.def
+++ b/reactos/lib/ntdll/def/ntdll.def
@@ -1,4 +1,4 @@
-; $Id: ntdll.def,v 1.91 2003/01/08 19:50:39 robd Exp $
+; $Id: ntdll.def,v 1.92 2003/02/16 18:54:26 hbirr Exp $
 ;
 ; ReactOS Operating System
 ;
@@ -882,6 +882,7 @@ isspace
 isupper
 iswalpha
 iswctype
+iswspace
 isxdigit
 labs
 log
diff --git a/reactos/lib/ntdll/def/ntdll.edf b/reactos/lib/ntdll/def/ntdll.edf
index 5c1a4d40caa..55ad0bdf319 100644
--- a/reactos/lib/ntdll/def/ntdll.edf
+++ b/reactos/lib/ntdll/def/ntdll.edf
@@ -1,4 +1,4 @@
-; $Id: ntdll.edf,v 1.80 2003/01/08 19:50:39 robd Exp $
+; $Id: ntdll.edf,v 1.81 2003/02/16 18:54:26 hbirr Exp $
 ;
 ; ReactOS Operating System
 ;
@@ -885,6 +885,7 @@ isspace
 isupper
 iswalpha
 iswctype
+iswspace
 isxdigit
 labs
 log
diff --git a/reactos/lib/ntdll/string/ctype.c b/reactos/lib/ntdll/string/ctype.c
index ab34358276f..0ed718ab8e7 100644
--- a/reactos/lib/ntdll/string/ctype.c
+++ b/reactos/lib/ntdll/string/ctype.c
@@ -1,4 +1,4 @@
-/* $Id: ctype.c,v 1.11 2002/10/01 18:57:23 chorns Exp $
+/* $Id: ctype.c,v 1.12 2003/02/16 18:54:26 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -372,6 +372,11 @@ int iswdigit(wint_t c)
    return (iswctype (c, _DIGIT));
 }
 
+int iswspace(wint_t c)
+{
+   return (iswctype (c, _SPACE));
+}
+
 int iswlower(wint_t c)
 {
    return (iswctype (c, _LOWER));