diff --git a/src/ioc/db/dbChannel.c b/src/ioc/db/dbChannel.c
index c6a8454f6..399d13dab 100644
--- a/src/ioc/db/dbChannel.c
+++ b/src/ioc/db/dbChannel.c
@@ -21,6 +21,7 @@
 #include "epicsAssert.h"
 #include "epicsExit.h"
 #include "epicsString.h"
+#include "epicsStdio.h"
 #include "errlog.h"
 #include "freeList.h"
 #include "gpHash.h"