diff --git a/src/http_stream.cpp b/src/http_stream.cpp
index abc99547..394ea321 100644
--- a/src/http_stream.cpp
+++ b/src/http_stream.cpp
@@ -37,6 +37,7 @@ struct _INIT_W32DATA
 #define SOCKET_ERROR   -1
 #endif /* _WIN32 */
 
+#include <cstdio>
 #include <vector>
 #include <iostream>
 using std::cerr;