diff --git a/include/gnss_utils/utils/rcv_position.h b/include/gnss_utils/utils/rcv_position.h
index 00ea4990e58e3b7f60a1b555004e01e068945c31..9ac529ce72cf96f98344dd16da856a2e9ff76fff 100644
--- a/include/gnss_utils/utils/rcv_position.h
+++ b/include/gnss_utils/utils/rcv_position.h
@@ -20,7 +20,7 @@
 namespace GnssUtils
 {
 
-ComputePosOutput computePos(const Observations& _observations, Navigation& _navigation, const prcopt_t& _prcopt);
+ComputePosOutput computePos(const Observations& _observations, const Navigation& _navigation, const prcopt_t& _prcopt);
 
 // ComputePosOutput computePosOwn(const Observations & _observations,
 //                                Navigation & _navigation,