diff --git a/c/scheme48heap.c b/c/scheme48heap.c
index 88cea6d..6e3fe13 100644
--- a/c/scheme48heap.c
+++ b/c/scheme48heap.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include "prescheme.h"
+#include <string.h>
 #include "scheme48vm.h"
 
 static long copy_weak_pointer(long, char *, char **);
diff --git a/c/scheme48vm.c b/c/scheme48vm.c
index 8289be5..6609106 100644
--- a/c/scheme48vm.c
+++ b/c/scheme48vm.c
@@ -7217,8 +7217,8 @@ long s48_restart(long proc_361X, long nargs_362X)
   arg0K0 = 4;
   goto L17320;}
  L31929: {
-  if ((3 == (3 & arg5_743X))) {
-    if ((17 == (31 & ((((*((long *) ((((char *) (-3 + arg5_743X))) + -4))))>>2))))) {
+  if ((3 == (3 & arg3_741X))) {
+    if ((17 == (31 & ((((*((long *) ((((char *) (-3 + arg3_741X))) + -4))))>>2))))) {
       goto L31942;}
     else {
       goto L31937;}}
@@ -8334,8 +8334,8 @@ long s48_restart(long proc_361X, long nargs_362X)
         else {
           goto L31959;}}}}}
  L31937: {
-  if ((3 == (3 & arg5_743X))) {
-    if ((18 == (31 & ((((*((long *) ((((char *) (-3 + arg5_743X))) + -4))))>>2))))) {
+  if ((3 == (3 & arg3_741X))) {
+    if ((18 == (31 & ((((*((long *) ((((char *) (-3 + arg3_741X))) + -4))))>>2))))) {
       goto L31942;}
     else {
       goto L31996;}}