From b382c01cc0da30ccb34cba72bb9c0cb103ad914b Mon Sep 17 00:00:00 2001
From: Martin Budden <mjbudden@gmail.com>
Date: Thu, 7 Sep 2017 21:43:40 +0100
Subject: [PATCH] Better check for compression method in fc_msp

---
 src/main/fc/fc_msp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/fc/fc_msp.c b/src/main/fc/fc_msp.c
index 9896808b96..97ebabec0a 100644
--- a/src/main/fc/fc_msp.c
+++ b/src/main/fc/fc_msp.c
@@ -310,7 +310,12 @@ static void serializeDataflashReadReply(sbuf_t *dst, uint32_t address, const uin
     sbufWriteU32(dst, address);
 
     // legacy format does not support compression
+#ifdef USE_HUFFMAN
     const uint8_t compressionMethod = (!allowCompression || useLegacyFormat) ? NO_COMPRESSION : HUFFMAN;
+#else
+    const uint8_t compressionMethod = NO_COMPRESSION;
+    UNUSED(allowCompression);
+#endif
 
     if (compressionMethod == NO_COMPRESSION) {
         if (!useLegacyFormat) {