diff --git a/src/knx/bau091A.cpp b/src/knx/bau091A.cpp
index 0fa0e7d..20319d1 100644
--- a/src/knx/bau091A.cpp
+++ b/src/knx/bau091A.cpp
@@ -205,7 +205,6 @@ TPAckType Bau091A::isAckRequired(uint16_t address, bool isGrpAddr)
         if(_dlLayerPrimary.isSentToTunnel(address, isGrpAddr))
             ack = TPAckType::AckReqAck;
 #endif
-
     }
 
     return ack;
diff --git a/src/knx/ip_data_link_layer.cpp b/src/knx/ip_data_link_layer.cpp
index ec19e8d..fd07359 100644
--- a/src/knx/ip_data_link_layer.cpp
+++ b/src/knx/ip_data_link_layer.cpp
@@ -768,7 +768,6 @@ void IpDataLinkLayer::loopHandleConnectRequest(uint8_t* buffer, uint16_t length,
             }
         
         tun->IndividualAddress = tunPa;
-
     }
 
     if(tun == nullptr)
diff --git a/src/knx/tpuart_data_link_layer.cpp b/src/knx/tpuart_data_link_layer.cpp
index 57f03ef..daab217 100644
--- a/src/knx/tpuart_data_link_layer.cpp
+++ b/src/knx/tpuart_data_link_layer.cpp
@@ -758,7 +758,6 @@ bool TpUartDataLinkLayer::reset()
             success = true;
             break; // next run for U_CONFIGURE_IND
         }
-
     } while (!((millis() - start) >= 10));
 
     connected(success);