diff --git a/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.cc b/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.cc
index 7323a155d..99498b74c 100644
--- a/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.cc
+++ b/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.cc
@@ -561,6 +561,9 @@ void hybrid_observables_gs::smooth_pseudoranges(std::vector<Gnss_Synchro> &data)
                         case evGAL_5X:
                             wavelength_m = SPEED_OF_LIGHT_M_S / FREQ5;
                             break;
+                        case evGAL_7X:
+                            wavelength_m = SPEED_OF_LIGHT_M_S / FREQ7;
+                            break;
                         case evGPS_2S:
                             wavelength_m = SPEED_OF_LIGHT_M_S / FREQ2;
                             break;
diff --git a/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.h b/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.h
index 1868d5876..92d93b1a3 100644
--- a/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.h
+++ b/src/algorithms/observables/gnuradio_blocks/hybrid_observables_gs.h
@@ -90,6 +90,7 @@ private:
         evSBAS_1C,
         evGAL_1B,
         evGAL_5X,
+        evGAL_7X,
         evGLO_1G,
         evGLO_2G,
         evBDS_B1,