diff --git a/svg.cpp b/svg.cpp
index 149f2cd..d8fe23a 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -1,4 +1,5 @@
 #include "svg.h"
+#include "histogram_internal.h"
 #include <iostream>
 #include <string>
 
@@ -31,25 +32,18 @@ void show_histogram_svg(const vector<size_t>& bins) {
     const auto TEXT_BASELINE = 20;
     const auto TEXT_WIDTH = 50;
     const auto BIN_HEIGHT = 30;
-
-    size_t max_count = 0;
-    for (size_t count : bins) {
-        if (count > max_count) {
-            max_count = count;
-        }
-    }
-
-    double BLOCK_WIDTH = (IMAGE_WIDTH - TEXT_WIDTH) / static_cast<double>(max_count);
+    const auto BLOCK_WIDTH = 10;
 
     svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
 
     double top = 0;
     for (size_t bin : bins) {
-        double bin_width = BLOCK_WIDTH * bin;
+        const double bin_width = BLOCK_WIDTH * bin;
         svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
-        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "#aaaaaa");
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
         top += BIN_HEIGHT;
     }
-
     svg_end();
 }
+
+