diff --git a/scp.c b/scp.c
index b31169aa..e23e7bc2 100644
--- a/scp.c
+++ b/scp.c
@@ -3607,7 +3607,7 @@ return do_cmd_label (flag, fcptr, NULL);
 
 static char *do_position(void)
 {
-static char cbuf[CBUFSIZE];
+static char cbuf[4*CBUFSIZE];
 
 snprintf (cbuf, sizeof (cbuf), "%s%s%s-%d", sim_do_filename[sim_do_depth], sim_do_label[sim_do_depth] ? "::" : "", sim_do_label[sim_do_depth] ? sim_do_label[sim_do_depth] : "", sim_goto_line[sim_do_depth]);
 return cbuf;
@@ -5045,7 +5045,7 @@ return SCPE_UNK;                                        /* only valid inside of
 
 t_stat call_cmd (int32 flag, CONST char *fcptr)
 {
-char cbuf[CBUFSIZE], gbuf[CBUFSIZE];
+char cbuf[2*CBUFSIZE], gbuf[CBUFSIZE];
 const char *cptr;
 
 if (NULL == sim_gotofile) return SCPE_UNK;              /* only valid inside of do_cmd */