diff --git a/src/share/vm/gc_implementation/shared/gcUtil.cpp b/src/share/vm/gc_implementation/shared/gcUtil.cpp
index 267f73d3b99392d303cb99b988143f651252cbfe..caa6efed1c8f61cd76ea8a7e901a470192ee406d 100644
--- a/src/share/vm/gc_implementation/shared/gcUtil.cpp
+++ b/src/share/vm/gc_implementation/shared/gcUtil.cpp
@@ -106,8 +106,8 @@ void AdaptivePaddedNoZeroDevAverage::sample(float new_sample) {
 }
 
 LinearLeastSquareFit::LinearLeastSquareFit(unsigned weight) :
-  _sum_x(0), _sum_y(0), _sum_xy(0),
-  _mean_x(weight), _mean_y(weight) {}
+  _sum_x(0), _sum_x_squared(0), _sum_y(0), _sum_xy(0),
+  _intercept(0), _slope(0), _mean_x(weight), _mean_y(weight) {}
 
 void LinearLeastSquareFit::update(double x, double y) {
   _sum_x = _sum_x + x;