diff --git a/src/knx/dpt.cpp b/src/knx/dpt.cpp
index 5f67db7..c8791ce 100644
--- a/src/knx/dpt.cpp
+++ b/src/knx/dpt.cpp
@@ -8,8 +8,7 @@ Dpt::Dpt()
 Dpt::Dpt(short mainGroup, short subGroup, short index /* = 0 */)
     : mainGroup(mainGroup), subGroup(subGroup), index(index)
 {
-    if ((mainGroup < 14 || mainGroup > 16) &&
-        subGroup == 0)
+    if (subGroup == 0 && (mainGroup < 14 || mainGroup > 16))
         println("WARNING: You used an invalid Dpt *.0");
 }