diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5710cca7a..1dd1b53eb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -120,6 +120,7 @@ endif()
 
 option(ENABLE_EXTERNAL_MATHJAX "Use MathJax from an external CDN in HTML docs" ON)
 
+option(ENABLE_ORC "Use (if available) the Optimized Inner Loop Runtime Compiler (ORC)" OFF)
 
 ################################################################################
 # GNSS-SDR version information
@@ -1139,15 +1140,22 @@ if(NOT VOLKGNSSSDR_FOUND)
     else()
         set(VOLK_GNSSSDR_COMPILER -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER})
     endif()
-    find_package(ORC)
-    set_package_properties(ORC PROPERTIES
-        PURPOSE "Used by volk_gnsssdr."
-        TYPE OPTIONAL
-    )
-    if(ORC_FOUND)
-        set(ORC_ENABLED ON)
+
+    if(ENABLE_ORC)
+        find_package(ORC)
+        set_package_properties(ORC PROPERTIES
+            PURPOSE "Used by volk_gnsssdr."
+            TYPE OPTIONAL
+            )
+        if(ORC_FOUND)
+            set(ORC_ENABLED ON)
+        else()
+            set(ORC_ENABLED OFF)
+            set(ENABLE_ORC OFF)
+        endif()
     else()
         set(ORC_ENABLED OFF)
+        set(ENABLE_ORC OFF)
     endif()
 
     set(VOLK_GNSSSDR_CMAKE_ARGS ${VOLK_GNSSSDR_COMPILER}
@@ -1336,6 +1344,7 @@ if(NOT VOLKGNSSSDR_FOUND)
     )
 else()
     set(ENABLE_OWN_CPUFEATURES OFF)
+    set(ENABLE_ORC OFF)
 endif()
 
 
@@ -3337,6 +3346,7 @@ add_feature_info(ENABLE_PACKAGING ENABLE_PACKAGING "Enables software packaging."
 add_feature_info(ENABLE_OWN_GLOG ENABLE_OWN_GLOG "Forces the downloading and building of Google glog.")
 add_feature_info(ENABLE_OWN_ARMADILLO ENABLE_OWN_ARMADILLO "Forces the downloading and building of Armadillo.")
 add_feature_info(ENABLE_LOG ENABLE_LOG "Enables runtime internal logging with Google glog.")
+add_feature_info(ENABLE_ORC ENABLE_ORC "Use the Optimized Inner Loop Runtime Compiler (ORC) for building volk_gnsssdr.")
 add_feature_info(ENABLE_STRIP ENABLE_STRIP "Enables the generation of stripped binaries (without debugging symbols).")
 add_feature_info(ENABLE_UNIT_TESTING ENABLE_UNIT_TESTING "Enables building of Unit Tests.")
 add_feature_info(ENABLE_UNIT_TESTING_MINIMAL ENABLE_UNIT_TESTING_MINIMAL "Enables building a minimal set of Unit Tests.")
diff --git a/src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_telemetry_decoder_gs.cc b/src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_telemetry_decoder_gs.cc
index 3a968f6b3..75e20684e 100644
--- a/src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_telemetry_decoder_gs.cc
+++ b/src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_telemetry_decoder_gs.cc
@@ -604,6 +604,7 @@ void galileo_telemetry_decoder_gs::reset()
     d_TOW_at_Preamble_ms = 0;
     d_fnav_nav.set_flag_TOW_set(false);
     d_inav_nav.set_flag_TOW_set(false);
+    d_inav_nav.set_TOW0_flag(false);
     d_last_valid_preamble = d_sample_counter;
     d_sent_tlm_failed_msg = false;
     d_stat = 0;