diff --git a/ChangeLog b/ChangeLog
index ee7ce78296..8673c594f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6484,3 +6484,5 @@
 	  ostest/Make.defs:  Add a configuration option to select the -m32
 	  compiler option when building for a 32-bit target on a native 64-bit
 	  compiler (2014-1-18).
+	* include/ctype.h: Typo in macro name: iscntrol, not iscontrol (2104-1-17)
+
diff --git a/include/ctype.h b/include/ctype.h
index 22b325eefd..fdcaad8dbe 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * include/ctype.h
  *
- *   Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007-2009, 2011, 2014 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -102,7 +102,7 @@
  *
  ****************************************************************************/
 
-#define iscontrol(c) (!isprint(c))
+#define iscntrl(c) (!isprint(c))
 
 /****************************************************************************
  * Name: islower