diff --git a/src/algorithms/signal_source/adapters/multichannel_file_signal_source.cc b/src/algorithms/signal_source/adapters/multichannel_file_signal_source.cc
index 28e992dbe..11efe4fd9 100644
--- a/src/algorithms/signal_source/adapters/multichannel_file_signal_source.cc
+++ b/src/algorithms/signal_source/adapters/multichannel_file_signal_source.cc
@@ -216,7 +216,7 @@ MultichannelFileSignalSource::MultichannelFileSignalSource(ConfigurationInterfac
     DLOG(INFO) << "Total number samples to be processed= " << samples_ << " GNSS signal duration= " << signal_duration_s << " [s]";
     std::cout << "GNSS signal recorded time to be processed: " << signal_duration_s << " [s]" << std::endl;
 
-    valve_ = gnss_sdr_make_valve(item_size_, samples_ * n_channels_, queue_);
+    valve_ = gnss_sdr_make_valve(item_size_, samples_, queue_);
     DLOG(INFO) << "valve(" << valve_->unique_id() << ")";
 
     if (enable_throttle_control_)