diff --git a/samplecode/SampleHairline.cpp b/samplecode/SampleHairline.cpp
index ab5ac8c..8368f5b 100644
--- a/samplecode/SampleHairline.cpp
+++ b/samplecode/SampleHairline.cpp
@@ -186,6 +186,7 @@
     bool fDoAA;
 public:
 	HairlineView() {
+        fCounter = 0;
         fProcIndex = 0;
         fDoAA = true;
         fNow = 0;
diff --git a/samplecode/SampleLineClipper.cpp b/samplecode/SampleLineClipper.cpp
index d0a8667..ac6b013 100644
--- a/samplecode/SampleLineClipper.cpp
+++ b/samplecode/SampleLineClipper.cpp
@@ -166,6 +166,7 @@
 	LineClipperView() {
         fProcIndex = 0;
         fCounter = 0;
+        fNow = 0;
 
         int x = (640 - W)/2;
         int y = (480 - H)/2;