diff --git a/README.md b/README.md
index 9a55462..c950989 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Precise map-matching for public transit schedules (GTFS data).
 ## Requirements
 
  * `cmake`
- * `gcc >= 4.8` (or `clang >= 5.0`)
+ * `gcc >= 4.9` (or `clang >= 5.0`)
 
 ## Building and Installation
 
diff --git a/src/util/http/Server.cpp b/src/util/http/Server.cpp
index 666396b..ecc246c 100644
--- a/src/util/http/Server.cpp
+++ b/src/util/http/Server.cpp
@@ -110,11 +110,11 @@ void HttpServer::handle() {
       answ = _handler->handle(req, connection);
       answ.gzip = gzipSupport(req);
     } catch (HttpErr err) {
-      answ = Answer{err.what(), err.what(), false, {}};
+      answ = Answer(err.what(), err.what());
     } catch (...) {
       // catch everything to make sure the server continues running
-      answ = Answer{
-          "500 Internal Server Error", "500 Internal Server Error", false, {}};
+      answ = Answer(
+          "500 Internal Server Error", "500 Internal Server Error");
     }
 
     send(connection, &answ);
@@ -151,7 +151,8 @@ Req HttpServer::getReq(int connection) {
   int64_t curRcvd = 0;
   HeaderState state = NONE;
   Req ret{"", "", "", "", {}};
-  char *tmp, *tmp2;
+  char *tmp = 0;
+  char *tmp2 = 0;
   char* brk = 0;
 
   while ((curRcvd = read(connection, buf + rcvd, BSIZE - rcvd))) {
diff --git a/src/util/http/Server.h b/src/util/http/Server.h
index 4397d67..ccefed7 100644
--- a/src/util/http/Server.h
+++ b/src/util/http/Server.h
@@ -11,6 +11,7 @@
 #include <stdexcept>
 #include <string>
 #include <thread>
+#include <unordered_map>
 #include <vector>
 
 #include <unistd.h>
@@ -62,6 +63,11 @@ struct Req {
  * HTTP Answer
  */
 struct Answer {
+  Answer() : status(""), pl(""), gzip(false) {}
+  Answer(const std::string& status, const std::string& pl)
+      : status(status), pl(pl), gzip(false) {}
+  Answer(const std::string& status, const std::string& pl, bool gz)
+      : status(status), pl(pl), gzip(gz) {}
   std::string status, pl;
   bool gzip;
   std::unordered_map<std::string, std::string> params;