diff --git a/marks.txt b/marks.txt
new file mode 100644
index 0000000..2cdb9aa
--- /dev/null
+++ b/marks.txt
@@ -0,0 +1,3 @@
+10
+3 3 4 4 4 4 4 5 5 5
+3
diff --git a/svg.h b/svg.h
index a6e8ad4..94958f7 100644
--- a/svg.h
+++ b/svg.h
@@ -3,7 +3,7 @@
 
 #include <vector>
 void
-show_histogram_svg(const std::vector<size_t>& bins, size_t number_count, size_t bin_count);
+show_histogram_svg(const std::vector<size_t>& bins);
 
 
 #endif // SVG_H_INCLUDED