diff --git a/bayesclass/FeatureSelect.cpp b/bayesclass/FeatureSelect.cpp
index ba8db68..e85875a 100644
--- a/bayesclass/FeatureSelect.cpp
+++ b/bayesclass/FeatureSelect.cpp
@@ -100,11 +100,10 @@ namespace features {
             for (auto& [label, jointCount] : jointCounts[feat]) {
                 auto p_l_f = jointCount / count;
                 if (p_l_f > 0) {
-                    double epsilon = 1e-9;
                     if (nat)
-                        entropy_f -= p_l_f * log(p_l_f + epsilon);
+                        entropy_f -= p_l_f * log(p_l_f);
                     else
-                        entropy_f -= p_l_f * log2(p_l_f + epsilon);
+                        entropy_f -= p_l_f * log2(p_l_f);
                 }
             }
             entropy += p_f * entropy_f;
diff --git a/bayesclass/FeatureSelect.h b/bayesclass/FeatureSelect.h
index 78a22a1..8737065 100644
--- a/bayesclass/FeatureSelect.h
+++ b/bayesclass/FeatureSelect.h
@@ -5,7 +5,7 @@
 #include <string>
 using namespace std;
 namespace features {
-    typedef double precision_t;
+    typedef float precision_t;
     typedef int value_t;
     typedef vector<value_t> sample_t;
     typedef vector<sample_t> samples_t;