diff --git a/3rdparty/udns/CMakeLists.txt b/3rdparty/udns/CMakeLists.txt
index e4ca6d2f..e4f14cbf 100644
--- a/3rdparty/udns/CMakeLists.txt
+++ b/3rdparty/udns/CMakeLists.txt
@@ -12,7 +12,6 @@ CHECK_SYMBOL_EXISTS(AF_INET6 "netinet/in.h" HAVE_IPv6)
 # somehow it is not, if somebody know a better way to define WINDOWS, please fix
 check_include_file(windows.h  WINDOWS)
 
-
 CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_BINARY_DIR}/config.h)
 include_directories(${CMAKE_BINARY_DIR})
 
@@ -20,23 +19,23 @@ set(HEADERS
 )
 
 set(SOURCES
-	udns_resolver.c
-	udns_dn.c 
-	udns_dntosp.c 
-	udns_parse.c 
-	udns_resolver.c 
-	udns_init.c
-    udns_misc.c 
-	udns_XtoX.c
-    udns_rr_a.c 
-	udns_rr_ptr.c 
-	udns_rr_mx.c 
-	udns_rr_txt.c 
-	udns_bl.c
-    udns_rr_srv.c 
-	udns_rr_naptr.c 
-	udns_codes.c 
-	udns_jran.c
+    udns_resolver.c
+    udns_dn.c
+    udns_dntosp.c
+    udns_parse.c
+    udns_resolver.c
+    udns_init.c
+    udns_misc.c
+    udns_rr_a.c
+    udns_rr_ptr.c
+    udns_rr_mx.c
+    udns_rr_txt.c
+    udns_bl.c
+    udns_rr_srv.c
+    udns_rr_naptr.c
+    udns_codes.c
+    udns_jran.c
+    udns_XtoX.c
 )
 
 simgear_component(udns 3rdparty/udns "${SOURCES}" "${HEADERS}")
diff --git a/3rdparty/udns/udns_XtoX.c b/3rdparty/udns/udns_XtoX.c
index 60e3fdfa..d68b6cec 100644
--- a/3rdparty/udns/udns_XtoX.c
+++ b/3rdparty/udns/udns_XtoX.c
@@ -43,8 +43,8 @@ int dns_pton(int af, const char *src, void *dst) {
 }
 
 #else
-
-#define inet_XtoX_prefix udns_
+#define inet_XtoX_no_ntop
+#define inet_XtoX_prefix dns_
 #include "inet_XtoX.c"
 
 #endif