diff --git a/main.cpp b/main.cpp
index df2c929..a6865be 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,6 +2,7 @@
 #include <vector>
 #include "histogram.h"
 #include "svg.h"
+#include <curl/curl.h>
 
 using namespace std;
 
@@ -37,6 +38,7 @@ input_data(istream& stream){
 
 int
 main() {
+    curl_global_init(CURL_GLOBAL_ALL);
     auto in = input_data(cin);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);