diff --git a/eo/test/binary_value.h b/eo/test/binary_value.h
index e36ad50c7..793e9de62 100644
--- a/eo/test/binary_value.h
+++ b/eo/test/binary_value.h
@@ -1,25 +1,16 @@
-#include <eo>
+#include <algorithm>
 
 //-----------------------------------------------------------------------------
 
-/** Just a simple function that takes binary value of a chromosome and sets
+/** Just the simple function that takes binary value of a chromosome and sets
     the fitnes.
     @param _chrom A binary chromosome 
 */
 
-template <class Chrom> float binary_value(const Chrom& _chrom)
+template <class Chrom> double binary_value(const Chrom& _chrom)
 {
-  float sum = 0;
-  for (unsigned i = 0; i < _chrom.size(); i++)
-    if (_chrom[i])
-      sum += pow(2, _chrom.size() - i - 1);
-  return sum;
+    double sum = 0.0;
+    for (unsigned i=0; i<_chrom.size(); i++)
+	sum += _chrom[i];
+    return sum;
 }
-
-struct BinaryValue
-{
-  template <class Chrom> void operator()(Chrom& _chrom)
-  {
-    _chrom.fitness(binary_value(_chrom));
-  }
-};
diff --git a/eo/test/t-eoGA.cpp b/eo/test/t-eoGA.cpp
index 31a22ae3c..6763edea7 100644
--- a/eo/test/t-eoGA.cpp
+++ b/eo/test/t-eoGA.cpp
@@ -1,6 +1,7 @@
 #include <iostream>
 
 #include <ga/make_ga.h>
+#include <eoEvalFuncPtr.h>
 #include "binary_value.h"
 #include <apply.h>
 
@@ -21,7 +22,7 @@ int main(int argc, char* argv[])
   //////////////////////////////////////////////////////
 
   // The evaluation fn - encapsulated into an eval counter for output 
-  eoEvalFuncPtr<EOT, float> mainEval( binary_value<EOT> );
+  eoEvalFuncPtr<EOT, double> mainEval( binary_value<EOT> );
   eoEvalFuncCounter<EOT> eval(mainEval);
 
   // the genotype - through a genotype initializer
diff --git a/eo/test/t-eoPBIL.cpp b/eo/test/t-eoPBIL.cpp
index 70efa6085..c546bc6bc 100644
--- a/eo/test/t-eoPBIL.cpp
+++ b/eo/test/t-eoPBIL.cpp
@@ -66,7 +66,7 @@ int main(int argc, char* argv[])
   //////////////////////////////////////////////////////
 
   // The evaluation fn - encapsulated into an eval counter for output 
-  eoEvalFuncPtr<Indi, float> mainEval( binary_value<Indi>);
+  eoEvalFuncPtr<Indi, double> mainEval( binary_value<Indi>);
   eoEvalFuncCounter<Indi> eval(mainEval);
 
   // COnstruction of the distribution
diff --git a/eo/test/t-eobin.cpp b/eo/test/t-eobin.cpp
index c2e9b058d..691f86b48 100644
--- a/eo/test/t-eobin.cpp
+++ b/eo/test/t-eobin.cpp
@@ -32,7 +32,7 @@
 
 //-----------------------------------------------------------------------------
 
-typedef eoBit<float> Chrom;
+typedef eoBit<double> Chrom;
 
 //-----------------------------------------------------------------------------