diff --git a/src/algorithms/signal_source/adapters/file_signal_source.cc b/src/algorithms/signal_source/adapters/file_signal_source.cc
index c6627d001..bc4fb6329 100644
--- a/src/algorithms/signal_source/adapters/file_signal_source.cc
+++ b/src/algorithms/signal_source/adapters/file_signal_source.cc
@@ -56,7 +56,7 @@ FileSignalSource::FileSignalSource(ConfigurationInterface* configuration,
     double default_seconds_to_skip = 0.0;
     size_t header_size = 0;
     samples_ = configuration->property(role + ".samples", 0);
-    sampling_frequency_ = configuration->property(role + ".sampling_frequency", 0LL);
+    sampling_frequency_ = configuration->property(role + ".sampling_frequency", 0);
     filename_ = configuration->property(role + ".filename", default_filename);
 
     // override value with commandline flag, if present