diff --git a/svg.h b/svg.h
index 27b77f1..eb4ddb2 100644
--- a/svg.h
+++ b/svg.h
@@ -1,4 +1,3 @@
-
 #pragma once
 #include <iostream>
 #include <string>
@@ -10,4 +9,4 @@ void svg_text(double left, double baseline, const std::string& text);
 void svg_rect(double x, double y, double width, double height,
     const std::string& stroke = "black",
     const std::string& fill = "black");
-void show_histogram_svg(const std::vector<size_t>& bins);
+void show_histogram_svg(const std::vector<size_t>& bins, double bin_size, double min_val);