diff --git a/process.c b/process.c
index 72c09b7..a9b76c3 100644
--- a/process.c
+++ b/process.c
@@ -131,7 +131,7 @@
 #ifdef IA64
 			return RVAL_HEX;
 #else
-			printnum(tcp, tcp->u_arg[3], "%#lx");
+			printnum_long(tcp, tcp->u_arg[3], "%#lx");
 			break;
 #endif
 		case PTRACE_GETSIGINFO: {