diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index 220e899d4f..bd629b2afd 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-06	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* libcsupport/src/envlock.c: Rename define ENVLOCK_DEDIDCATED_MUTEX
+	into ENVLOCK_DEDICATED_MUTEX (Typo).
+
 2011-12-06	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* libmisc/serdbg/serdbg.h: Add serdbg_init_dbg.
diff --git a/cpukit/libcsupport/src/envlock.c b/cpukit/libcsupport/src/envlock.c
index 9594e0abe3..667f6052d4 100644
--- a/cpukit/libcsupport/src/envlock.c
+++ b/cpukit/libcsupport/src/envlock.c
@@ -36,7 +36,7 @@
  *
  */
 
-#if defined(ENVLOCK_DEDIDCATED_MUTEX)
+#if defined(ENVLOCK_DEDICATED_MUTEX)
 static rtems_id envLock=0;
 
 static void