diff --git a/src/tests/gnss_block/gps_l1_ca_pcps_opencl_acquisition_gsoc2013_test.cc b/src/tests/gnss_block/gps_l1_ca_pcps_opencl_acquisition_gsoc2013_test.cc
index 8d609b271..9f701fc7d 100644
--- a/src/tests/gnss_block/gps_l1_ca_pcps_opencl_acquisition_gsoc2013_test.cc
+++ b/src/tests/gnss_block/gps_l1_ca_pcps_opencl_acquisition_gsoc2013_test.cc
@@ -51,6 +51,62 @@
 #include "gen_signal_source.h"
 #include "gnss_sdr_valve.h"
 
+// ######## GNURADIO BLOCK MESSAGE RECEVER #########
+class GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx;
+
+typedef boost::shared_ptr<GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx> GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_sptr;
+
+GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_sptr GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_make(concurrent_queue<int>& queue);
+
+
+class GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx : public gr::block
+{
+private:
+    friend GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_sptr GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_make(concurrent_queue<int>& queue);
+    void msg_handler_events(pmt::pmt_t msg);
+    GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx(concurrent_queue<int>& queue);
+    concurrent_queue<int>& channel_internal_queue;
+public:
+    int rx_message;
+    ~GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx(); //!< Default destructor
+};
+
+
+GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_sptr GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_make(concurrent_queue<int>& queue)
+{
+    return GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_sptr(new GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx(queue));
+}
+
+
+void GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx::msg_handler_events(pmt::pmt_t msg)
+{
+    try
+    {
+            long int message = pmt::to_long(msg);
+            rx_message = message;
+            channel_internal_queue.push(rx_message);
+    }
+    catch(boost::bad_any_cast& e)
+    {
+            LOG(WARNING) << "msg_handler_telemetry Bad any cast!";
+            rx_message = 0;
+    }
+}
+
+
+GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx::GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx(concurrent_queue<int>& queue) :
+    gr::block("GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx", gr::io_signature::make(0, 0, 0), gr::io_signature::make(0, 0, 0)), channel_internal_queue(queue)
+{
+    this->message_port_register_in(pmt::mp("events"));
+    this->set_msg_handler(pmt::mp("events"), boost::bind(&GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx::msg_handler_events, this, _1));
+    rx_message = 0;
+}
+
+GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx::~GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx()
+{}
+
+
+// ###########################################################
 
 class GpsL1CaPcpsOpenClAcquisitionGSoC2013Test: public ::testing::Test
 {
@@ -77,6 +133,7 @@ protected:
     void process_message();
     void stop_queue();
 
+    concurrent_queue<int> channel_internal_queue;
     gr::msg_queue::sptr queue;
     gr::top_block_sptr top_block;
     std::shared_ptr<GpsL1CaPcpsOpenClAcquisition> acquisition;
@@ -372,6 +429,7 @@ TEST_F(GpsL1CaPcpsOpenClAcquisitionGSoC2013Test, ConnectAndRun)
 
     config_1();
     acquisition = std::make_shared<GpsL1CaPcpsOpenClAcquisition>(config.get(), "Acquisition", 1, 1, queue);
+    boost::shared_ptr<GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx> msg_rx = GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_make(channel_internal_queue);
 
     ASSERT_NO_THROW( {
         acquisition->connect(top_block);
@@ -379,6 +437,7 @@ TEST_F(GpsL1CaPcpsOpenClAcquisitionGSoC2013Test, ConnectAndRun)
         boost::shared_ptr<gr::block> valve = gnss_sdr_make_valve(sizeof(gr_complex), nsamples, queue);
         top_block->connect(source, 0, valve, 0);
         top_block->connect(valve, 0, acquisition->get_left_block(), 0);
+        top_block->msg_connect(acquisition->get_right_block(), pmt::mp("events"), msg_rx, pmt::mp("events"));
     }) << "Failure connecting the blocks of acquisition test." << std::endl;
 
     EXPECT_NO_THROW( {
@@ -397,6 +456,7 @@ TEST_F(GpsL1CaPcpsOpenClAcquisitionGSoC2013Test, ValidationOfResults)
     config_1();
 
     acquisition = std::make_shared<GpsL1CaPcpsOpenClAcquisition>(config.get(), "Acquisition", 1, 1, queue);
+    boost::shared_ptr<GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx> msg_rx = GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_make(channel_internal_queue);
 
     ASSERT_NO_THROW( {
         acquisition->set_channel(1);
@@ -431,6 +491,7 @@ TEST_F(GpsL1CaPcpsOpenClAcquisitionGSoC2013Test, ValidationOfResults)
         signal_source.reset(new GenSignalSource(signal_generator, filter, "SignalSource", queue));
         signal_source->connect(top_block);
         top_block->connect(signal_source->get_right_block(), 0, acquisition->get_left_block(), 0);
+        top_block->msg_connect(acquisition->get_right_block(), pmt::mp("events"), msg_rx, pmt::mp("events"));
     }) << "Failure connecting the blocks of acquisition test." << std::endl;
 
     // i = 0 --> satellite in acquisition is visible
@@ -477,6 +538,7 @@ TEST_F(GpsL1CaPcpsOpenClAcquisitionGSoC2013Test, ValidationOfResultsProbabilitie
     config_2();
 
     acquisition = std::make_shared<GpsL1CaPcpsOpenClAcquisition>(config.get(), "Acquisition", 1, 1, queue);
+    boost::shared_ptr<GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx> msg_rx = GpsL1CaPcpsOpenClAcquisitionGSoC2013Test_msg_rx_make(channel_internal_queue);
 
     ASSERT_NO_THROW( {
         acquisition->set_channel(1);
@@ -511,6 +573,7 @@ TEST_F(GpsL1CaPcpsOpenClAcquisitionGSoC2013Test, ValidationOfResultsProbabilitie
         signal_source.reset(new GenSignalSource(signal_generator, filter, "SignalSource", queue));
         signal_source->connect(top_block);
         top_block->connect(signal_source->get_right_block(), 0, acquisition->get_left_block(), 0);
+        top_block->msg_connect(acquisition->get_right_block(), pmt::mp("events"), msg_rx, pmt::mp("events"));
     }) << "Failure connecting the blocks of acquisition test." << std::endl;
 
     std::cout << "Probability of false alarm (target) = " << 0.1 << std::endl;
diff --git a/src/tests/test_main.cc b/src/tests/test_main.cc
index ed6b2cd5c..d55a88a45 100644
--- a/src/tests/test_main.cc
+++ b/src/tests/test_main.cc
@@ -91,9 +91,9 @@ DECLARE_string(log_dir);
 #include "gnss_block/gps_l2_m_pcps_acquisition_test.cc"
 #include "gnss_block/gps_l1_ca_pcps_acquisition_gsoc2013_test.cc"
 //#include "gnss_block/gps_l1_ca_pcps_multithread_acquisition_gsoc2013_test.cc"
-//#if OPENCL_BLOCKS_TEST
-//#include "gnss_block/gps_l1_ca_pcps_opencl_acquisition_gsoc2013_test.cc"
-//#endif
+#if OPENCL_BLOCKS_TEST
+#include "gnss_block/gps_l1_ca_pcps_opencl_acquisition_gsoc2013_test.cc"
+#endif
 #include "gnss_block/gps_l1_ca_pcps_quicksync_acquisition_gsoc2014_test.cc"
 #include "gnss_block/gps_l1_ca_pcps_tong_acquisition_gsoc2013_test.cc"
 #include "gnss_block/galileo_e1_pcps_ambiguous_acquisition_test.cc"