diff --git a/gnss-converters.cabal b/gnss-converters.cabal
--- a/gnss-converters.cabal
+++ b/gnss-converters.cabal
@@ -1,6 +1,6 @@
 cabal-version: >=1.22
 name: gnss-converters
-version: 0.3.42
+version: 0.3.43
 license: BSD3
 copyright: Copyright (C) 2016, 2017 Swift Navigation, Inc.
 maintainer: Swift Navigation <dev@swiftnav.com>
diff --git a/src/Data/RTCM3/SBP/MSM.hs b/src/Data/RTCM3/SBP/MSM.hs
--- a/src/Data/RTCM3/SBP/MSM.hs
+++ b/src/Data/RTCM3/SBP/MSM.hs
@@ -62,6 +62,7 @@
   | sig == 2  = Just 0
   | sig == 3  = Just 5
   | sig == 9  = Just 6
+  | sig == 10 = Just 6
   | sig == 15 = Just 1
   | sig == 16 = Just 7
   | sig == 17 = Just 1