diff --git a/dsdl/uavcan/equipment/gnss/300.Fix.uavcan b/dsdl/uavcan/equipment/gnss/300.Fix.uavcan
index ff7faeab09..f78f1bc919 100644
--- a/dsdl/uavcan/equipment/gnss/300.Fix.uavcan
+++ b/dsdl/uavcan/equipment/gnss/300.Fix.uavcan
@@ -13,7 +13,7 @@ int24 alt_1e2
 
 float16[3] ned_velocity
 
-uint5 sats_used
+uint6 sats_used
 
 uint2 STATUS_NO_FIX    = 0
 uint2 STATUS_TIME_ONLY = 1
@@ -21,5 +21,7 @@ uint2 STATUS_2D_FIX    = 2
 uint2 STATUS_3D_FIX    = 3
 uint2 status
 
+float16 pdop                       # Negative if unknown
+
 float16[<=9] position_covariance   # m^2
 float16[<=9] velocity_covariance   # (m/s)^2