diff --git a/src/libCom/osi/os/posix/osdMutex.c b/src/libCom/osi/os/posix/osdMutex.c
index 08eda1002..128558368 100644
--- a/src/libCom/osi/os/posix/osdMutex.c
+++ b/src/libCom/osi/os/posix/osdMutex.c
@@ -15,7 +15,6 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
 #include <pthread.h>
@@ -66,22 +65,24 @@ static void setAttrDefaults(pthread_mutexattr_t *a)
 	status = pthread_mutexattr_init(a);
 	checkStatusQuit(status,"pthread_mutexattr_init","setAttrDefaults");
 
-#if defined _POSIX_THREAD_PRIO_INHERIT
 	{
 		const char *p = envGetConfigParamPtr(&EPICS_MUTEX_USE_PRIORITY_INHERITANCE);
 		char        c = p ? toupper(p[0]) : 'N';
 		if ( 'T' == c || 'Y' == c || '1' == c ) {
+#if defined _POSIX_THREAD_PRIO_INHERIT
 			status = pthread_mutexattr_setprotocol(a, PTHREAD_PRIO_INHERIT);
 			if (errVerbose) checkStatus(status, "pthread_mutexattr_setprotocol(PTHREAD_PRIO_INHERIT)");
 #ifndef HAVE_RECURSIVE_MUTEX
 			/* The implementation based on a condition variable below does not support 
 			 * priority-inheritance!
 			 */
-			epicsPrintf("WARNING: PRIORITY-INHERITANCE UNAVAILABLE for epicsMutex\n");
+			fprintf(stderr,"WARNING: PRIORITY-INHERITANCE UNAVAILABLE for epicsMutex\n");
+#endif
+#else
+			fprintf(stderr,"WARNING: PRIORITY-INHERITANCE UNAVAILABLE OR NOT COMPILED IN\n");
 #endif
 		}
 	}
-#endif
 
 }