diff --git a/configure.ac b/configure.ac
index b206691..cc79f13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -102,13 +102,13 @@ if test x"$transparent_enabled" = x"yes"; then
 fi
 
 dnl Include support for reverse dns to match IP network/mask ?
-AH_TEMPLATE([RDNS_ENABLE],
-	    [Include support for reverse dns to match IP network/mask. This is best used with nscd enabled to minimise DNS resolution delays])
+AH_TEMPLATE([FDNS_ENABLE],
+	    [Include support for forward dns to match IP network/mask. This is best used with nscd enabled to minimise DNS resolution delays])
 TP_ARG_ENABLE(rdns,
-	      [Enable support for reverse dns to match IP network/mask (default is NO)],
+	      [Enable support for forward dns to match IP network/mask (default is NO)],
 	      no)
-if test x"$rdns__enabled" = x"yes"; then
-   AC_DEFINE(RDNS_ENABLE)
+if test x"$fdns__enabled" = x"yes"; then
+   AC_DEFINE(FDNS_ENABLE)
 fi
 
 dnl Let user decide whether he wants support for manpages
diff --git a/docs/man5/tinyproxy.conf.txt.in b/docs/man5/tinyproxy.conf.txt.in
index e35b27b..53b472e 100644
--- a/docs/man5/tinyproxy.conf.txt.in
+++ b/docs/man5/tinyproxy.conf.txt.in
@@ -200,7 +200,7 @@ Note that the upstream directive can also be used to null-route
 a specific target domain/host, e.g.:
 `upstream http 0.0.0.0:0 ".adserver.com"`
 
-With RDNS enabled the site's IP address will also be matched against the <IP/bits> or <IP/mask> values in addition to the name or domain match
+With FDNS enabled the site's IP address will also be matched against the <IP/bits> or <IP/mask> values in addition to the name or domain match
 =item B<MaxClients>
 
 Tinyproxy creates one thread for each connected client.
diff --git a/src/hostspec.c b/src/hostspec.c
index 52f4a00..fc48d43 100644
--- a/src/hostspec.c
+++ b/src/hostspec.c
@@ -2,7 +2,7 @@
 #include "hostspec.h"
 #include "heap.h"
 #include "network.h"
-#ifdef RDNS_ENABLE
+#ifdef FDNS_ENABLE
 #include "log.h"
 #endif
 
@@ -162,8 +162,8 @@ static int numeric_match(const uint8_t addr[], const struct hostspec *h)
 	return 1;
 }
 
-#ifdef RDNS_ENABLE
-static int reverse_dns_numeric_match(const char *ip, const struct hostspec *h)
+#ifdef FDNS_ENABLE
+static int dns_numeric_match(const char *ip, const struct hostspec *h)
 {
 	int ret;
 	struct addrinfo *res, *ressave;
@@ -210,8 +210,8 @@ int hostspec_match(const char *ip, const struct hostspec *h) {
 		if(is_numeric_addr) return 0;
 		return string_match (ip, h->address.string);
 	case HST_NUMERIC:
-#ifdef RDNS_ENABLE
-		if(!is_numeric_addr) return reverse_dns_numeric_match(ip, h);
+#ifdef FDNS_ENABLE
+		if(!is_numeric_addr) return dns_numeric_match(ip, h);
 #endif
 		return numeric_match (numeric_addr, h);
 	case HST_NONE: