diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,15 @@
 
 SET(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 
+IF(MSVC)
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4250 /wd4355 /wd4800 /wd4996")
+# Suppressed warnings:
+# C4250: 'class1' : inherits 'class2::member' via dominance
+# C4355: 'this' : used in base member initializer list
+# C4800: 'type' : forcing value to bool 'true' or 'false' (performance warning)
+# C4996: 'function': was declared deprecated
+ENDIF(MSVC)
+
 INCLUDE(FindDoxygen)
 INCLUDE(FindGhostscript)
 
diff --git a/lemon/base.cc b/lemon/base.cc
--- a/lemon/base.cc
+++ b/lemon/base.cc
@@ -23,7 +23,7 @@
 #include<lemon/core.h>
 namespace lemon {
 
-  float Tolerance<float>::def_epsilon = 1e-4;
+  float Tolerance<float>::def_epsilon = static_cast<float>(1e-4);
   double Tolerance<double>::def_epsilon = 1e-10;
   long double Tolerance<long double>::def_epsilon = 1e-14;
 
diff --git a/test/maps_test.cc b/test/maps_test.cc
--- a/test/maps_test.cc
+++ b/test/maps_test.cc
@@ -170,7 +170,7 @@
   {
     typedef ComposeMap<DoubleMap, ReadMap<B,A> > CompMap;
     checkConcept<ReadMap<B,double>, CompMap>();
-    CompMap map1(DoubleMap(),ReadMap<B,A>());
+    CompMap map1 = CompMap(DoubleMap(),ReadMap<B,A>());
     CompMap map2 = composeMap(DoubleMap(), ReadMap<B,A>());
 
     SparseMap<double, bool> m1(false); m1[3.14] = true;
@@ -183,7 +183,7 @@
   {
     typedef CombineMap<DoubleMap, DoubleMap, std::plus<double> > CombMap;
     checkConcept<ReadMap<A,double>, CombMap>();
-    CombMap map1(DoubleMap(), DoubleMap());
+    CombMap map1 = CombMap(DoubleMap(), DoubleMap());
     CombMap map2 = combineMap(DoubleMap(), DoubleMap(), std::plus<double>());
 
     check(combineMap(constMap<B,int,2>(), identityMap<B>(), &binc)[B()] == 3,
@@ -195,11 +195,11 @@
     checkConcept<ReadMap<A,B>, FunctorToMap<F,A,B> >();
     checkConcept<ReadMap<A,B>, FunctorToMap<F> >();
     FunctorToMap<F> map1;
-    FunctorToMap<F> map2(F());
+    FunctorToMap<F> map2 = FunctorToMap<F>(F());
     B b = functorToMap(F())[A()];
 
     checkConcept<ReadMap<A,B>, MapToFunctor<ReadMap<A,B> > >();
-    MapToFunctor<ReadMap<A,B> > map(ReadMap<A,B>());
+    MapToFunctor<ReadMap<A,B> > map = MapToFunctor<ReadMap<A,B> >(ReadMap<A,B>());
 
     check(functorToMap(&func)[A()] == 3,
           "Something is wrong with FunctorToMap");