diff --git a/README.md b/README.md
index 79de2ec..6487b78 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,6 @@ See [doc/example.conf](doc/example.conf) for more details.
 ### Global directives
 
 * `geoip_dir` (optional) - path to a directory containing GeoIP databases
-* `dns_server` (optional) - address of a DNS server
 
 
 ### Configuration
diff --git a/src/lib/config.c b/src/lib/config.c
index 6ac4a03..e463da5 100644
--- a/src/lib/config.c
+++ b/src/lib/config.c
@@ -61,9 +61,6 @@ static int config_parse_line(char *line, char *section, int *i, int *j) {
         if (len > 10 && strncmp(ptr, "geoip_dir", 9) == 0 && (ptr[9] == ' ' || ptr[9] == '\t')) {
             source = ptr + 9;
             target = config.geoip_dir;
-        } else if (len > 11 && strncmp(ptr, "dns_server", 10) == 0 && (ptr[10] == ' ' || ptr[10] == '\t')) {
-            source = ptr + 10;
-            target = config.dns_server;
         } else {
             return -1;
         }
diff --git a/src/lib/config.h b/src/lib/config.h
index 7479474..3e8b102 100644
--- a/src/lib/config.h
+++ b/src/lib/config.h
@@ -53,7 +53,6 @@ typedef struct {
     host_config_t hosts[CONFIG_MAX_HOST_CONFIG];
     cert_config_t certs[CONFIG_MAX_CERT_CONFIG];
     char geoip_dir[256];
-    char dns_server[256];
 } config_t;
 
 extern config_t config;
diff --git a/src/worker/tcp_acceptor.c b/src/worker/tcp_acceptor.c
index 305f022..c20419f 100644
--- a/src/worker/tcp_acceptor.c
+++ b/src/worker/tcp_acceptor.c
@@ -33,7 +33,7 @@ static int dig(const char *addr, char *host, size_t host_size) {
     FILE *out;
     int ret;
 
-    sprintf(buf, "dig @%s +short +time=1 -x %s", config.dns_server, addr);
+    sprintf(buf, "dig +short +time=1 -x %s", addr);
     if ((out = popen(buf, "r")) == NULL) {
         error("Unable to start dig: %s");
         return -1;
@@ -85,8 +85,7 @@ static int tcp_acceptor(client_ctx_t *ctx) {
     ctx->cnx_s = clock_micros();
 
     ctx->host[0] = 0;
-    if (config.dns_server[0] != 0)
-       dig(ctx->socket.addr, ctx->host, sizeof(ctx->host));
+   dig(ctx->socket.addr, ctx->host, sizeof(ctx->host));
 
     ctx->cc[0] = 0;
     geoip_lookup_country(&client->_addr.sock, ctx->cc);