diff --git a/src/nghttp.cc b/src/nghttp.cc
index 8211f096..01a7f025 100644
--- a/src/nghttp.cc
+++ b/src/nghttp.cc
@@ -586,8 +586,6 @@ struct HttpClient {
   }
 };
 
-extern bool ssl_debug;
-
 namespace {
 void submit_request(HttpClient *client,
                     const std::map<std::string, std::string>& headers,
@@ -861,13 +859,13 @@ int client_select_next_proto_cb(SSL* ssl,
                                 const unsigned char *in, unsigned int inlen,
                                 void *arg)
 {
-  if(ssl_debug) {
+  if(config.verbose) {
     print_timer();
     std::cout << " NPN select next protocol: the remote server offers:"
               << std::endl;
   }
   for(unsigned int i = 0; i < inlen; i += in[i]+1) {
-    if(ssl_debug) {
+    if(config.verbose) {
       std::cout << "          * ";
       std::cout.write(reinterpret_cast<const char*>(&in[i+1]), in[i]);
       std::cout << std::endl;
@@ -877,7 +875,7 @@ int client_select_next_proto_cb(SSL* ssl,
     std::cerr << "Server did not advertise HTTP/2.0 protocol."
               << std::endl;
   } else {
-    if(ssl_debug) {
+    if(config.verbose) {
       std::cout << "          NPN selected the protocol: "
                 << std::string((const char*)*out, (size_t)*outlen)
                 << std::endl;
@@ -1088,7 +1086,6 @@ int run(char **uris, int n)
     callbacks.on_unknown_frame_recv_callback = on_unknown_frame_recv_callback;
   }
   callbacks.on_data_chunk_recv_callback = on_data_chunk_recv_callback;
-  ssl_debug = config.verbose;
   std::string prev_host;
   uint16_t prev_port = 0;
   int failures = 0;
diff --git a/src/nghttp2_ssl.cc b/src/nghttp2_ssl.cc
index 51637e63..57dac029 100644
--- a/src/nghttp2_ssl.cc
+++ b/src/nghttp2_ssl.cc
@@ -48,37 +48,6 @@
 
 namespace nghttp2 {
 
-bool ssl_debug = false;
-
-int select_next_proto_cb(SSL* ssl,
-                         unsigned char **out, unsigned char *outlen,
-                         const unsigned char *in, unsigned int inlen,
-                         void *arg)
-{
-  if(ssl_debug) {
-    print_timer();
-    std::cout << " NPN select next protocol: the remote server offers:"
-              << std::endl;
-  }
-  for(unsigned int i = 0; i < inlen; i += in[i]+1) {
-    if(ssl_debug) {
-      std::cout << "          * ";
-      std::cout.write(reinterpret_cast<const char*>(&in[i+1]), in[i]);
-      std::cout << std::endl;
-    }
-  }
-  if(nghttp2_select_next_protocol(out, outlen, in, inlen) <= 0) {
-    std::cerr << "Server did not advertise HTTP/2.0 protocol."
-              << std::endl;
-    abort();
-  }
-  if(ssl_debug) {
-    std::cout << "          NPN selected the protocol: "
-              << std::string((const char*)*out, (size_t)*outlen) << std::endl;
-  }
-  return SSL_TLSEXT_ERR_OK;
-}
-
 namespace {
 const char* strstatus(nghttp2_error_code error_code)
 {
diff --git a/src/nghttp2_ssl.h b/src/nghttp2_ssl.h
index e31bef26..30f4d3b0 100644
--- a/src/nghttp2_ssl.h
+++ b/src/nghttp2_ssl.h
@@ -39,13 +39,6 @@
 
 namespace nghttp2 {
 
-extern bool ssl_debug;
-
-int select_next_proto_cb(SSL* ssl,
-                         unsigned char **out, unsigned char *outlen,
-                         const unsigned char *in, unsigned int inlen,
-                         void *arg);
-
 void print_nv(char **nv);
 
 void on_frame_recv_callback
diff --git a/src/nghttpd.cc b/src/nghttpd.cc
index 9425b4da..3e8c0bd3 100644
--- a/src/nghttpd.cc
+++ b/src/nghttpd.cc
@@ -42,8 +42,6 @@
 
 namespace nghttp2 {
 
-extern bool ssl_debug;
-
 namespace {
 void print_usage(std::ostream& out)
 {
@@ -168,7 +166,6 @@ int main(int argc, char **argv)
   SSL_library_init();
   reset_timer();
   config.on_request_recv_callback = htdocs_on_request_recv_callback;
-  ssl_debug = config.verbose;
 
   HttpServer server(&config);
   server.run();