diff --git a/common/file.c b/common/file.c
index 90d2c23..aa3b0ce 100644
--- a/common/file.c
+++ b/common/file.c
@@ -44,7 +44,10 @@ __RCSID("$NetBSD: file.c,v 1.16 2016/06/08 01:11:49 christos Exp $");
 #  include "../netbsd_h/exec_aout.h"
 # endif
 # if !defined(MID_VAX)
-#  define MID_VAX 140
+#  define MID_VAX 150
+# endif
+# if !defined(MID_VAX1K)
+#  define MID_VAX1K 140
 # endif
 #endif /* NOAOUT */
 
@@ -326,6 +329,11 @@ getMID(int old_mid, int new_mid)
 		mid = MID_VAX;
 		break;
 #endif
+#ifdef MID_VAX1K
+	case MID_VAX1K:
+		mid = MID_VAX1K;
+		break;
+#endif
 #ifdef MID_ALPHA
 	case MID_ALPHA:
 		mid = MID_ALPHA;
@@ -354,8 +362,8 @@ getCLBYTES(int mid)
 	int	clbytes;
 
 	switch (mid) {
-#ifdef MID_VAX
-	case MID_VAX:
+#ifdef MID_VAX1K
+	case MID_VAX1K:
 		clbytes = 1024;
 		break;
 #endif
@@ -377,8 +385,12 @@ getCLBYTES(int mid)
 #ifdef MID_ARM6
 	case MID_ARM6:
 #endif
+#ifdef MID_VAX
+	case MID_VAX:
+#endif
 #if defined(MID_I386) || defined(MID_M68K4K) || defined(MID_NS32532) || \
-    defined(MID_PMAX) || defined(MID_MIPS) || defined(MID_ARM6)
+    defined(MID_PMAX) || defined(MID_MIPS) || defined(MID_ARM6) || \
+    defined(MID_VAX)
 		clbytes = 4096;
 		break;
 #endif
@@ -695,6 +707,9 @@ GetAOutFileInfo(struct dllist *dl)
 #ifdef MID_VAX
 	case MID_VAX:
 #endif
+#ifdef MID_VAX1K
+	case MID_VAX1K:
+#endif
 #ifdef MID_ALPHA
 	case MID_ALPHA:
 #endif
@@ -764,6 +779,11 @@ GetAOutFileInfo(struct dllist *dl)
 		printf("vax");
 		break;
 #endif
+#ifdef MID_VAX1K
+	case MID_VAX1K:
+		printf("vax 1k");
+		break;
+#endif
 #ifdef MID_ALPHA
 	case MID_ALPHA:
 		printf("alpha");
diff --git a/mopcopy/mopcopy.c b/mopcopy/mopcopy.c
index dd13332..c4ae799 100644
--- a/mopcopy/mopcopy.c
+++ b/mopcopy/mopcopy.c
@@ -70,6 +70,9 @@ __RCSID("$NetBSD: mopcopy.c,v 1.7 2019/12/27 09:41:52 msaitoh Exp $");
 #define NOAOUT
 #endif
 #if !defined(MID_VAX)
+#define MID_VAX 150
+#endif
+#if !defined(MID_VAX1K)
 #define MID_VAX 140
 #endif
 
@@ -126,7 +129,7 @@ main(int argc, char **argv)
 
 #ifndef NOAOUT
 	case IMAGE_TYPE_AOUT:
-		if (dl.a_mid != MID_VAX)
+		if (dl.a_mid != MID_VAX && dl.a_mid != MID_VAX1K)
 			printf("WARNING: `%s' is not a VAX image (mid=%d)\n",
 			    argv[1], dl.a_mid);
 		i = dl.a_text + dl.a_text_fill + dl.a_data + dl.a_data_fill +