diff --git a/src/algorithms/PVT/libs/rinex_printer.cc b/src/algorithms/PVT/libs/rinex_printer.cc
index e9553e4f0..b6ff5323c 100644
--- a/src/algorithms/PVT/libs/rinex_printer.cc
+++ b/src/algorithms/PVT/libs/rinex_printer.cc
@@ -2147,7 +2147,7 @@ void Rinex_Printer::log_rinex_obs(std::ofstream& out, const Gps_Ephemeris& eph,
                 {
                     line += std::string(1, ' ');
                 }
-            line += Rinex_Printer::asString(fmod(gps_t, 60), 7);
+            line += Rinex_Printer::asString(second_, 7);
             line += std::string(2, ' ');
             // Epoch flag 0: OK     1: power failure between previous and current epoch   <1: Special event
             line += std::string(1, '0');