diff --git a/sys/arch/amiga/amiga/trap.c b/sys/arch/amiga/amiga/trap.c
index 45f01eeed161..63c6601f84b0 100644
--- a/sys/arch/amiga/amiga/trap.c
+++ b/sys/arch/amiga/amiga/trap.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: trap.c,v 1.27 1995/03/08 06:46:03 mycroft Exp $	*/
+/*	$NetBSD: trap.c,v 1.28 1995/03/08 06:50:02 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -708,6 +708,10 @@ syscall(code, frame)
 		} else
 			p->p_md.md_flags &= ~MDP_STACKADJ;
 		break;
+#endif
+#ifdef DIAGNOSTIC
+	default:
+		panic("invalid p_emul %d", p->p_emul);
 #endif
 	}
 
diff --git a/sys/arch/hp300/hp300/trap.c b/sys/arch/hp300/hp300/trap.c
index a4f0887ba363..e0ef652266a5 100644
--- a/sys/arch/hp300/hp300/trap.c
+++ b/sys/arch/hp300/hp300/trap.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: trap.c,v 1.29 1995/03/08 06:39:06 mycroft Exp $	*/
+/*	$NetBSD: trap.c,v 1.30 1995/03/08 06:49:22 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -953,6 +953,10 @@ syscall(code, frame)
 		nsys = hpux_nsysent;
 		callp = hpux_sysent;
 		break;
+#endif
+#ifdef DIAGNOSTIC
+	default:
+		panic("invalid p_emul %d", p->p_emul);
 #endif
 	}