diff --git a/notes b/notes
index 7a683ac..66a11f3 100644
--- a/notes
+++ b/notes
@@ -35,7 +35,7 @@ TODO {
         about-license info
     }
     
-    fix overrun-by-1 on sample preview
+    - fix overrun-by-1 on sample preview
     
     templatize svfilter and have mono version for synth use
     
diff --git a/xybrid/data/sample.cpp b/xybrid/data/sample.cpp
index 404ffb4..d545201 100644
--- a/xybrid/data/sample.cpp
+++ b/xybrid/data/sample.cpp
@@ -35,7 +35,7 @@ using namespace Xybrid::Data;
 std::array<float, 2> Sample::plotBetween(size_t ch, size_t start, size_t end) const {
     if (end < start) end = start;
     if (ch >= 2 || start >= data[ch].size()) return {0, 0};
-    end = std::min(end, data[ch].size());
+    end = std::min(end, data[ch].size()-1);
     float mx = -100;
     float mn = 100;