diff --git a/src/knx/application_layer.cpp b/src/knx/application_layer.cpp
index c7a3928..4688ada 100644
--- a/src/knx/application_layer.cpp
+++ b/src/knx/application_layer.cpp
@@ -247,7 +247,7 @@ void ApplicationLayer::dataSystemBroadcastIndication(HopCountType hopType, Prior
             popWord(propertyId, data + 3);
             popByte(testInfo[0], data + 4);
             popByte(testInfo[1], data + 5);
-            propertyId = (propertyId >> 4) & 0x0FFF;;
+            propertyId = (propertyId >> 4) & 0x0FFF;
             testInfo[0] &= 0x0F;
             _bau.systemNetworkParameterReadIndication(priority, hopType, secCtrl, objectType, propertyId, testInfo, sizeof(testInfo));
             break;
@@ -296,7 +296,7 @@ void ApplicationLayer::dataSystemBroadcastConfirm(HopCountType hopType, Priority
             popWord(propertyId, data + 3);
             popByte(testInfo[0], data + 4);
             popByte(testInfo[1], data + 5);
-            propertyId = (propertyId >> 4) & 0x0FFF;;
+            propertyId = (propertyId >> 4) & 0x0FFF;
             testInfo[0] &= 0x0F;
             _bau.systemNetworkParameterReadLocalConfirm(priority, hopType, secCtrl, objectType, propertyId, testInfo, sizeof(testInfo), status);
             break;
diff --git a/src/knx/dptconvert.cpp b/src/knx/dptconvert.cpp
index 12726b3..1a3b46a 100644
--- a/src/knx/dptconvert.cpp
+++ b/src/knx/dptconvert.cpp
@@ -505,7 +505,8 @@ bool busValueToTime(const uint8_t* payload, size_t payload_length, const Dpt& da
             if (hours > 23 || minutes > 59 || seconds > 59)
                 return false;
 
-            struct tm tmp = {0};
+            struct tm tmp;
+            memset(&tmp, 0, sizeof(tmp));
             tmp.tm_hour = hours;
             tmp.tm_wday = weekDay;
             tmp.tm_min = minutes;
@@ -528,7 +529,8 @@ bool busValueToDate(const uint8_t* payload, size_t payload_length, const Dpt& da
     if (year > 99 || month < 1 || month > 12 || day < 1)
         return false;
 
-    struct tm tmp = {0};
+    struct tm tmp;
+    memset(&tmp, 0, sizeof(tmp));
     year += year >= 90 ? 1900 : 2000;
     tmp.tm_mday = day;
     tmp.tm_year = year;
@@ -726,7 +728,8 @@ bool busValueToDateTime(const uint8_t* payload, size_t payload_length, const Dpt
                 if ((hours > 24 || minutes > 59 || seconds > 59))
                     return false;
 
-                struct tm tmp = {0};
+                struct tm tmp;
+                memset(&tmp, 0, sizeof(tmp));
                 tmp.tm_sec = seconds;
                 tmp.tm_min = minutes;
                 tmp.tm_hour = hours;
diff --git a/src/knx/interface_object.cpp b/src/knx/interface_object.cpp
index 93d5077..38969d0 100644
--- a/src/knx/interface_object.cpp
+++ b/src/knx/interface_object.cpp
@@ -122,7 +122,7 @@ void InterfaceObject::command(PropertyID id, uint8_t* data, uint8_t length, uint
     if (prop == nullptr)
     {
         resultLength = 0;
-        return;;
+        return;
     }
 
     prop->command(data, length, resultData, resultLength);
@@ -135,7 +135,7 @@ void InterfaceObject::state(PropertyID id, uint8_t* data, uint8_t length, uint8_
     if (prop == nullptr)
     {
         resultLength = 0;
-        return;;
+        return;
     }
 
     prop->state(data, length, resultData, resultLength);
diff --git a/src/knx/knx_value.cpp b/src/knx/knx_value.cpp
index b671d11..2e5b355 100644
--- a/src/knx/knx_value.cpp
+++ b/src/knx/knx_value.cpp
@@ -601,7 +601,8 @@ struct tm KNXValue::timeValue() const
         }
     }
 
-    struct tm tmp = {0};
+    struct tm tmp;
+    memset(&tmp, 0, sizeof(tmp));
 
     return tmp;
 }