diff --git a/kernel/proc.c b/kernel/proc.c
index 0ac064492..8fab71827 100755
--- a/kernel/proc.c
+++ b/kernel/proc.c
@@ -112,9 +112,10 @@ message *m_ptr;			/* pointer to message in the caller's space */
    * if the caller doesn't do receive(). 
    */
   if (! (priv(caller_ptr)->s_trap_mask & (1 << function)) || 
-          (iskerneln(src_dst) && function != SENDREC)) { 
-      kprintf("sys_call: trap not allowed, function %d, caller %d\n", 
-          function, proc_nr(caller_ptr));
+          (iskerneln(src_dst) && function != SENDREC && function != RECEIVE)) { 
+      kprintf("sys_call: trap not allowed, function %d, caller %d, mask %x, src_dst %d\n", 
+          function, proc_nr(caller_ptr), 
+          	priv(caller_ptr)->s_trap_mask, src_dst);
       return(ECALLDENIED);		/* call denied by trap mask */
   }
   
diff --git a/kernel/table.c b/kernel/table.c
index 93082917f..0b474c30c 100755
--- a/kernel/table.c
+++ b/kernel/table.c
@@ -83,7 +83,7 @@ PUBLIC char *t_stack[TOT_STACK_SPACE / sizeof(char *)];
 #define FS_C	(c(SYS_KILL) | c(SYS_VIRCOPY) | c(SYS_VIRVCOPY) | c(SYS_UMAP) \
     | c(SYS_GETINFO) | c(SYS_EXIT) | c(SYS_TIMES) | c(SYS_SETALARM))
 #define DRV_C	(FS_C | c(SYS_SEGCTL) | c(SYS_IRQCTL) | c(SYS_INT86) \
-    | c(SYS_DEVIO) | c(SYS_VDEVIO) | c(SYS_SDEVIO))
+    | c(SYS_DEVIO) | c(SYS_VDEVIO) | c(SYS_SDEVIO) | c(SYS_PHYSCOPY) | c(SYS_PHYSVCOPY))
 
 /* The system image table lists all programs that are part of the boot image. 
  * The order of the entries here MUST agree with the order of the programs