diff --git a/bbfdm/Makefile b/bbfdm/Makefile
index 15b20c4de..27914a523 100644
--- a/bbfdm/Makefile
+++ b/bbfdm/Makefile
@@ -107,7 +107,7 @@ endif
 
 CMAKE_OPTIONS += \
 	-DBBF_VENDOR_PREFIX:String="$(CONFIG_BBF_VENDOR_PREFIX)" \
-	-DBBFDMD_MAX_MSG_LEN:Integer=10485760 \
+	-DBBFDMD_MAX_MSG_LEN:Integer=20971520 \
 	-DCMAKE_BUILD_TYPE:String="Debug" \