diff --git a/sys/sparc64/sparc64/db_disasm.c b/sys/sparc64/sparc64/db_disasm.c
index d5c1d69b8f89..7d047ccd21ad 100644
--- a/sys/sparc64/sparc64/db_disasm.c
+++ b/sys/sparc64/sparc64/db_disasm.c
@@ -802,9 +802,7 @@ struct sparc_insn sparc_i[] = {
 };
 
 db_addr_t
-db_disasm(loc, altfmt)
-	db_addr_t loc;
-	boolean_t altfmt;
+db_disasm(db_addr_t loc, boolean_t altfmt)
 {
 	struct sparc_insn*	i_ptr = (struct sparc_insn *)&sparc_i;