diff --git a/terminal.c b/terminal.c
index 7a444b71..5b37fe79 100644
--- a/terminal.c
+++ b/terminal.c
@@ -5445,7 +5445,7 @@ typedef struct {
 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
 {
     if (b->bufpos >= b->buflen) {
-	b->buflen += 128;
+	b->buflen *= 2;
 	b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
 	b->textptr = b->textbuf + b->bufpos;
 	b->attrbuf = sresize(b->attrbuf, b->buflen, int);