diff --git a/VAX/vax_vc.c b/VAX/vax_vc.c
index 07f59fbb..70a224e4 100644
--- a/VAX/vax_vc.c
+++ b/VAX/vax_vc.c
@@ -648,7 +648,7 @@ for (scrln = 0; scrln < 1024; scrln++) {
 vc_buf[rg] = nval;
 }
 
-SIM_INLINE void vc_invalidate (uint32 y1, uint32 y2)
+static SIM_INLINE void vc_invalidate (uint32 y1, uint32 y2)
 {
 uint32 ln;
 for (ln = y1; ln < y2; ln++)