diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index d9119c245..1a4561555 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -321,15 +321,15 @@ template<> inline bool ei_random()
 {
   return (ei_random<int>(0,1) == 1);
 }
-inline bool ei_isMuchSmallerThan(bool a, bool, bool = false/*NumTraits<bool>::dummy_precision()*/)
+inline bool ei_isMuchSmallerThan(bool a, bool, bool = NumTraits<bool>::dummy_precision())
 {
   return !a;
 }
-inline bool ei_isApprox(bool a, bool b, bool = false/*NumTraits<bool>::dummy_precision()*/)
+inline bool ei_isApprox(bool a, bool b, bool = NumTraits<bool>::dummy_precision())
 {
   return a == b;
 }
-inline bool ei_isApproxOrLessThan(bool a, bool b, bool = false/*NumTraits<bool>::dummy_precision()*/)
+inline bool ei_isApproxOrLessThan(bool a, bool b, bool = NumTraits<bool>::dummy_precision())
 {
   return int(a) <= int(b);
 }
diff --git a/Eigen/src/Core/NumTraits.h b/Eigen/src/Core/NumTraits.h
index 4f0cc04eb..37787b569 100644
--- a/Eigen/src/Core/NumTraits.h
+++ b/Eigen/src/Core/NumTraits.h
@@ -61,7 +61,7 @@ template<typename T> struct ei_default_float_numtraits
 template<typename T> struct ei_default_integral_numtraits
   : std::numeric_limits<T>
 {
-  inline static int dummy_precision() { return 0; }
+  inline static T dummy_precision() { return T(0); }
   inline static T highest() { return std::numeric_limits<T>::max(); }
   inline static T lowest()  { return std::numeric_limits<T>::min(); }
 };