diff --git a/Filtered_kernel/include/CGAL/internal/Static_filters/Equal_2.h b/Filtered_kernel/include/CGAL/internal/Static_filters/Equal_2.h
index a72c54a403e..227adc6b0d7 100644
--- a/Filtered_kernel/include/CGAL/internal/Static_filters/Equal_2.h
+++ b/Filtered_kernel/include/CGAL/internal/Static_filters/Equal_2.h
@@ -39,6 +39,7 @@ template < typename K_base >
 class Equal_2
   : public K_base::Equal_2
 {
+  typedef typename K_base::FT        FT;
   typedef typename K_base::Point_2   Point_2;
   typedef typename K_base::Vector_2  Vector_2;
   typedef typename K_base::Equal_2   Base;
@@ -68,6 +69,7 @@ public:
     Get_approx<Point_2> get_approx; // Identity functor for all points
                                     // but lazy points
     double px, py, qx, qy;
+    init_double(px, py,qx, qy, (FT*)(0));
 
     if (fit_in_double(get_approx(p).x(), px) && fit_in_double(get_approx(p).y(), py) &&
         fit_in_double(get_approx(q).x(), qx) && fit_in_double(get_approx(q).y(), qy) )
diff --git a/Kernel_23/include/CGAL/Circle_2.h b/Kernel_23/include/CGAL/Circle_2.h
index a3d67895e02..4a3085fec13 100644
--- a/Kernel_23/include/CGAL/Circle_2.h
+++ b/Kernel_23/include/CGAL/Circle_2.h
@@ -271,7 +271,7 @@ std::istream&
 extract(std::istream& is, Circle_2<R>& c)
 {
     typename R::Point_2 center;
-    typename R::FT squared_radius;
+    typename R::FT squared_radius(0);
     int o;
     switch(get_mode(is)) {
     case IO::ASCII :
diff --git a/Kernel_23/include/CGAL/Direction_2.h b/Kernel_23/include/CGAL/Direction_2.h
index 2c693b0a2f8..9d3f556dc79 100644
--- a/Kernel_23/include/CGAL/Direction_2.h
+++ b/Kernel_23/include/CGAL/Direction_2.h
@@ -231,7 +231,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Direction_2<R>& d, const Cartesian_tag&)
 {
-    typename R::FT x, y;
+  typename R::FT x(0), y(0);
     switch(get_mode(is)) {
     case IO::ASCII :
         is >> iformat(x) >> iformat(y);
diff --git a/Kernel_23/include/CGAL/Direction_3.h b/Kernel_23/include/CGAL/Direction_3.h
index a03c5116b3f..4c889a8281c 100644
--- a/Kernel_23/include/CGAL/Direction_3.h
+++ b/Kernel_23/include/CGAL/Direction_3.h
@@ -188,7 +188,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Direction_3<R>& d, const Cartesian_tag&) 
 {
-  typename R::FT x, y, z;
+  typename R::FT x(0), y(0), z(0);
   switch(get_mode(is)) {
     case IO::ASCII :
       is >> iformat(x) >> iformat(y) >> iformat(z);
diff --git a/Kernel_23/include/CGAL/Line_2.h b/Kernel_23/include/CGAL/Line_2.h
index dc96015b833..08c838a568a 100644
--- a/Kernel_23/include/CGAL/Line_2.h
+++ b/Kernel_23/include/CGAL/Line_2.h
@@ -260,7 +260,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Line_2<R>& l)
 {
-    typename R::RT a, b, c;
+  typename R::RT a(0), b(0), c(0);
     switch(get_mode(is)) {
     case IO::ASCII :
         is >> iformat(a) >> iformat(b) >> iformat(c);
diff --git a/Kernel_23/include/CGAL/Plane_3.h b/Kernel_23/include/CGAL/Plane_3.h
index 337c910bf5d..887293deb89 100644
--- a/Kernel_23/include/CGAL/Plane_3.h
+++ b/Kernel_23/include/CGAL/Plane_3.h
@@ -257,7 +257,7 @@ template < class R >
 std::istream &
 operator>>(std::istream &is, Plane_3<R> &p)
 {
-    typename R::RT a, b, c, d;
+  typename R::RT a(0), b(0), c(0), d(0);
     switch(get_mode(is)) {
     case IO::ASCII :
         is >> iformat(a) >> iformat(b) >> iformat(c) >> iformat(d);
diff --git a/Kernel_23/include/CGAL/Point_2.h b/Kernel_23/include/CGAL/Point_2.h
index f6d14d1708f..6e1a97b2f5b 100644
--- a/Kernel_23/include/CGAL/Point_2.h
+++ b/Kernel_23/include/CGAL/Point_2.h
@@ -214,7 +214,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Point_2<R>& p, const Cartesian_tag&)
 {
-    typename R::FT x, y;
+  typename R::FT x(0), y(0);
     switch(get_mode(is)) {
     case IO::ASCII :
         is >> iformat(x) >> iformat(y);
diff --git a/Kernel_23/include/CGAL/Point_3.h b/Kernel_23/include/CGAL/Point_3.h
index 7c7e88de0af..362b84f3c01 100644
--- a/Kernel_23/include/CGAL/Point_3.h
+++ b/Kernel_23/include/CGAL/Point_3.h
@@ -242,7 +242,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Point_3<R>& p, const Cartesian_tag&)
 {
-    typename R::FT x, y, z;
+  typename R::FT x(0), y(0), z(0);
     switch(get_mode(is)) {
     case IO::ASCII :
         is >> iformat(x) >> iformat(y) >> iformat(z);
diff --git a/Kernel_23/include/CGAL/Sphere_3.h b/Kernel_23/include/CGAL/Sphere_3.h
index 0fc542033fd..78aeb657ed2 100644
--- a/Kernel_23/include/CGAL/Sphere_3.h
+++ b/Kernel_23/include/CGAL/Sphere_3.h
@@ -289,7 +289,7 @@ std::istream&
 extract(std::istream& is, Sphere_3<R>& c, const Cartesian_tag&)
 {
     typename R::Point_3 center;
-    typename R::FT squared_radius;
+    typename R::FT squared_radius(0);
     int o=0;
     switch(get_mode(is)) {
     case IO::ASCII :
diff --git a/Kernel_23/include/CGAL/Vector_2.h b/Kernel_23/include/CGAL/Vector_2.h
index 89714e6fc74..8ecb9a74eab 100644
--- a/Kernel_23/include/CGAL/Vector_2.h
+++ b/Kernel_23/include/CGAL/Vector_2.h
@@ -299,7 +299,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Vector_2<R>& v, const Cartesian_tag&)
 {
-    typename R::FT x, y;
+  typename R::FT x(0), y(0);
     switch(get_mode(is)) {
     case IO::ASCII :
         is >> iformat(x) >> iformat(y);
diff --git a/Kernel_23/include/CGAL/Vector_3.h b/Kernel_23/include/CGAL/Vector_3.h
index 2fbdd2789de..afc67b09778 100644
--- a/Kernel_23/include/CGAL/Vector_3.h
+++ b/Kernel_23/include/CGAL/Vector_3.h
@@ -279,7 +279,7 @@ template <class R >
 std::istream&
 extract(std::istream& is, Vector_3<R>& v, const Cartesian_tag&) 
 {
-  typename R::FT x, y, z;
+  typename R::FT x(0), y(0), z(0);
   switch(get_mode(is)) {
     case IO::ASCII :
       is >> iformat(x) >> iformat(y) >> iformat(z);