diff --git a/src/strbuf.c b/src/strbuf.c
index 0e9b397..483744b 100644
--- a/src/strbuf.c
+++ b/src/strbuf.c
@@ -102,6 +102,14 @@ void strbuf_append_ch(strbuf_t *s, char ch) {
     s->buf[s->len] = '\0';
 }
 
+void strbuf_append_repeat(strbuf_t *s, char ch, size_t len) {
+
+    strbuf_expand(s, len);
+    memset(s->buf + s->len, ch, len);
+    s->len += len;
+    s->buf[s->len] = '\0';
+}
+
 void strbuf_rchop(strbuf_t *s, char ch) {
 
     int i;
diff --git a/src/strbuf.h b/src/strbuf.h
index 534f976..46dcb8c 100644
--- a/src/strbuf.h
+++ b/src/strbuf.h
@@ -41,6 +41,8 @@ void strbuf_append_str(strbuf_t *s, const char *str);
 
 void strbuf_append_ch(strbuf_t *s, char ch);
 
+void strbuf_append_repeat(strbuf_t *s, char ch, size_t len);
+
 void strbuf_rchop(strbuf_t *s, char ch);
 
 void strbuf_term(strbuf_t *s, char ch);
diff --git a/test/t_strbuf.c b/test/t_strbuf.c
index 6a82866..cc46481 100644
--- a/test/t_strbuf.c
+++ b/test/t_strbuf.c
@@ -105,14 +105,14 @@ void test_trim() {
 	
     print_strbuf(&b);
 
-    strbuf_append(&b, "    ", 4);
+    strbuf_append_repeat(&b, ' ', 4);
     strbuf_append(&b, "abcdef", 6);
 	
 	print_strbuf(&b);
 	
     strbuf_append(&b, "012345678901234567890123456789", 30);
     strbuf_append_ch(&b, 'a'); 
-    strbuf_append_str(&b, "      ");
+    strbuf_append_repeat(&b, ' ', 6);
 
     print_strbuf(&b);