diff --git a/nmrpflash.cbp b/nmrpflash.cbp
index b2fde97..bf9b66d 100644
--- a/nmrpflash.cbp
+++ b/nmrpflash.cbp
@@ -18,7 +18,7 @@
 			<Add option="-Wall" />
 			<Add option="-std=c99" />
 			<Add option="-m32" />
-			<Add option='-DNMRPFLASH_VERSION=\&quot;0.9.22\&quot;' />
+			<Add option='-DNMRPFLASH_VERSION=\&quot;0.9.24\&quot;' />
 			<Add option="-DWINVER=0x0600" />
 			<Add option="-D_WIN32_WINNT=0x0600" />
 			<Add option="-DWIN32_LEAN_AND_MEAN" />
diff --git a/tftp.c b/tftp.c
index ab6eb3e..04509aa 100644
--- a/tftp.c
+++ b/tftp.c
@@ -491,6 +491,9 @@ ssize_t tftp_put(struct nmrpd_args *args)
 		}
 
 		ret = tftp_recvfrom(sock, rx, &port, rx_timeout, blksize + 4);
+
+		// stop calling nmrp_discard() if the last call didn't actually discard anything.
+		// this turned out to be a major bottleneck on Windows, each call blocking > 10ms
 		if (discard) {
 			discard &= nmrp_discard(args->sock);
 		}