diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
index 448a8c31ba35977a4be03b164d2c4d119c38900a..5a362ba76d63f1d636a43cafdee084a4eead6bf2 100644
--- a/drivers/scsi/isci/port.c
+++ b/drivers/scsi/isci/port.c
@@ -62,7 +62,7 @@
 
 #undef C
 #define C(a) (#a)
-const char *port_state_name(enum sci_port_states state)
+static const char *port_state_name(enum sci_port_states state)
 {
 	static const char * const strings[] = PORT_STATES;