diff --git a/sys/i386/include/pcb_ext.h b/sys/i386/include/pcb_ext.h
index 850b5e532e22..1969709dbf0b 100644
--- a/sys/i386/include/pcb_ext.h
+++ b/sys/i386/include/pcb_ext.h
@@ -46,10 +46,7 @@ struct pcb_ext {
 };
 
 #ifdef _KERNEL
-extern int private_tss;
-
 int i386_extend_pcb(struct thread *);
-
 #endif
 
 #endif /* _I386_PCB_EXT_H_ */