diff --git a/src/mux_fcgi.c b/src/mux_fcgi.c
index d916496..83c57a4 100644
--- a/src/mux_fcgi.c
+++ b/src/mux_fcgi.c
@@ -4184,14 +4184,14 @@
 		if (fstrm->cs)
 			chunk_appendf(msg, " .cs.flg=0x%08x .cs.data=%p",
 				      fstrm->cs->flags, fstrm->cs->data);
-		chunk_appendf(&trash, " .subs=%p", fstrm->subs);
+		chunk_appendf(msg, " .subs=%p", fstrm->subs);
 		if (fstrm->subs) {
-			chunk_appendf(&trash, "(ev=%d tl=%p", fstrm->subs->events, fstrm->subs->tasklet);
-			chunk_appendf(&trash, " tl.calls=%d tl.ctx=%p tl.fct=",
+			chunk_appendf(msg, "(ev=%d tl=%p", fstrm->subs->events, fstrm->subs->tasklet);
+			chunk_appendf(msg, " tl.calls=%d tl.ctx=%p tl.fct=",
 				      fstrm->subs->tasklet->calls,
 				      fstrm->subs->tasklet->context);
-			resolve_sym_name(&trash, NULL, fstrm->subs->tasklet->process);
-			chunk_appendf(&trash, ")");
+			resolve_sym_name(msg, NULL, fstrm->subs->tasklet->process);
+			chunk_appendf(msg, ")");
 		}
 	}
 	return 0;