diff --git a/scsh/syscalls.scm b/scsh/syscalls.scm
index cb24f73..743f31f 100644
--- a/scsh/syscalls.scm
+++ b/scsh/syscalls.scm
@@ -143,7 +143,7 @@
 
 (import-os-error-syscall process-group () "scsh_getpgrp")
 
-(import-os-error-syscall %set-process-group (pid groupid) "setpgid")
+(import-os-error-syscall %set-process-group (pid groupid) "scsh_setpgid")
 
 (define (set-process-group arg1 . maybe-arg2)
   (receive (pid pgrp) (if (null? maybe-arg2)
diff --git a/scsh/syscalls1.c b/scsh/syscalls1.c
index 33c8638..3d9c872 100644
--- a/scsh/syscalls1.c
+++ b/scsh/syscalls1.c
@@ -7,6 +7,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/signal.h>
+#include <signal.h>
 #include <sys/types.h>
 #include <sys/times.h>
 #include <sys/time.h>
@@ -127,8 +128,8 @@ s48_value scheme_exec(s48_value prog, s48_value argv, s48_value env)
   }
   s48_stop_alarm_interrupts();
   execve(s48_extract_string (prog), unix_argv, unix_env); /* Do it. */
-  s48_start_alarm_interrupts();
   e = errno;
+  s48_start_alarm_interrupts();
   if( env != S48_TRUE ) {
     Free(unix_env);
   }
@@ -982,7 +983,7 @@ void s48_init_syscalls (){
   S48_EXPORT_FUNCTION(scsh_getpid);
   S48_EXPORT_FUNCTION(scsh_getppid);
   S48_EXPORT_FUNCTION(scsh_getpgrp);
-  S48_EXPORT_FUNCTION(setpgid);
+  S48_EXPORT_FUNCTION(scsh_setpgid);
   S48_EXPORT_FUNCTION(scsh_setsid);
   S48_EXPORT_FUNCTION(scsh_umask);
   S48_EXPORT_FUNCTION(process_times);