diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index db5a0a6543..200788d65a 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,8 @@
+2009-01-05	Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* itron/inline/rtems/itron/semaphore.inl: THREAD_STATUS_PROXY_BLOCKING
+	should only be defined in multiprocessing configurations.
+
 2009-01-05	Joel Sherrill <joel.sherrill@oarcorp.com>
 
 	* posix/include/rtems/posix/key.h: Remove redundant prototypes for
diff --git a/cpukit/itron/inline/rtems/itron/semaphore.inl b/cpukit/itron/inline/rtems/itron/semaphore.inl
index 5341acf9af..c9e21729a3 100644
--- a/cpukit/itron/inline/rtems/itron/semaphore.inl
+++ b/cpukit/itron/inline/rtems/itron/semaphore.inl
@@ -176,8 +176,10 @@ RTEMS_INLINE_ROUTINE ER  _ITRON_Semaphore_Translate_core_semaphore_return_code (
       return E_TMOUT;
     case CORE_SEMAPHORE_MAXIMUM_COUNT_EXCEEDED:
       return E_QOVR;
-    case THREAD_STATUS_PROXY_BLOCKING:
-      return THREAD_STATUS_PROXY_BLOCKING;
+    #if defined(RTEMS_MULTIPROCESSING)
+      case THREAD_STATUS_PROXY_BLOCKING:
+        return THREAD_STATUS_PROXY_BLOCKING;
+    #endif
   }
   return E_OK;   /* unreached - only to remove warnings */
 }