diff --git a/util/ego/ra/ra_profits.h b/util/ego/ra/ra_profits.h
index 6eb6f8f84..443b3631d 100644
--- a/util/ego/ra/ra_profits.h
+++ b/util/ego/ra/ra_profits.h
@@ -7,5 +7,5 @@
 extern compute_profits();/* (alloc_p alloclist)
 			 * Compute the profits attribute of every allocation.
 			 */
-short regsave_cost(); 	/* (short regs[], *time_out, *space_out)
+extern regsave_cost(); 	/* (short regs[], *time_out, *space_out)
 			 */