diff --git a/src/algorithms/tracking/libs/exponential_smoother.cc b/src/algorithms/tracking/libs/exponential_smoother.cc
index aa83a494e..9bc32347c 100644
--- a/src/algorithms/tracking/libs/exponential_smoother.cc
+++ b/src/algorithms/tracking/libs/exponential_smoother.cc
@@ -76,7 +76,7 @@ void Exponential_Smoother::set_samples_for_initialization(int num_samples)
         {
             ns = 1;
         }
-    samples_for_initialization_ = num_samples;
+    samples_for_initialization_ = ns;
     init_buffer_.reserve(samples_for_initialization_);
 }