diff --git a/src/core/buffer.c b/src/core/buffer.c
index 1f964965..3a32dd1e 100644
--- a/src/core/buffer.c
+++ b/src/core/buffer.c
@@ -208,6 +208,16 @@ static Janet cfun_buffer_chars(int32_t argc, Janet *argv) {
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
     for (i = 1; i < argc; i++) {
         JanetByteView view = janet_getbytes(argv, i);
+        if (janet_checktype(argv[i], JANET_BUFFER)) {
+            JanetBuffer *other = janet_getbuffer(argv, i);
+            if (buffer == other) {
+                JanetBuffer *tmp = janet_buffer(buffer->count);
+                janet_buffer_setcount(tmp, buffer->count);
+                memcpy(tmp->data, buffer->data, buffer->count);
+                view.bytes = tmp->data;
+                view.len = tmp->count;
+            }
+        }
         janet_buffer_push_bytes(buffer, view.bytes, view.len);
     }
     return argv[0];
diff --git a/test/suite3.janet b/test/suite3.janet
index 00fce95d..c0707e4b 100644
--- a/test/suite3.janet
+++ b/test/suite3.janet
@@ -170,6 +170,15 @@
 (assert (= 8 (length b3)) "buffer/push-word 3")
 (assert (= "\xFF\xFF\xFF\xFF\0\x11\0\0" (string b3)) "buffer/push-word 4")
 
+# Buffer push string
+
+(def b4 (buffer/new-filled 10 0))
+(buffer/push-string b4 b4)
+(assert (= "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" (string b4)) "buffer/push-buffer 1")
+(def b5 @"123")
+(buffer/push-string b5 "456" @"789")
+(assert (= "123456789" (string b5)) "buffer/push-buffer 2")
+
 # Peg
 
 (defn check-match