diff --git a/lib/pingpong.c b/lib/pingpong.c
index eca385e489..c7e89d0a82 100644
--- a/lib/pingpong.c
+++ b/lib/pingpong.c
@@ -377,7 +377,7 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
             /* This is the end of the last line, copy the last line to the
                start of the buffer and zero terminate, for old times sake */
             size_t n = ptr - pp->linestart_resp;
-            memcpy(buf, pp->linestart_resp, n);
+            memmove(buf, pp->linestart_resp, n);
             buf[n]=0; /* zero terminate */
             keepon=FALSE;
             pp->linestart_resp = ptr+1; /* advance pointer */