diff --git a/src/knx/address_table_object.cpp b/src/knx/address_table_object.cpp
index b921ed2..01286bd 100644
--- a/src/knx/address_table_object.cpp
+++ b/src/knx/address_table_object.cpp
@@ -38,7 +38,7 @@ uint16_t AddressTableObject::getTsap(uint16_t addr)
 {
     uint16_t size = entryCount();
     #ifdef USE_BINSEARCH
-    addr = ntohs(addr);
+    addr = htons(addr);
 
     uint16_t low,high,i;
     low = 1;