diff --git a/rtemsbsd/rtems/syslog.c b/rtemsbsd/rtems/syslog.c
index f2f20fd0..7d3128bc 100644
--- a/rtemsbsd/rtems/syslog.c
+++ b/rtemsbsd/rtems/syslog.c
@@ -18,6 +18,8 @@
 
 #include <unistd.h>
 
+#include <machine/rtems-bsd-printf-to-iprintf.h>
+
 static int LogStatus = LOG_CONS;
 static const char *LogTag = "syslog";
 static int LogFacility = LOG_USER;