2 files changed, 7 insertions, 1 deletions
diff --git a/src/knx/core/qknxbytearray.cpp b/src/knx/core/qknxbytearray.cpp
index 6a573d6..53ed547 100644
--- a/src/knx/core/qknxbytearray.cpp
+++ b/src/knx/core/qknxbytearray.cpp
@@ -243,6 +243,9 @@ void QKnxByteArray::clear()
 */
 void QKnxByteArray::resize(int size)
 {
+    if (size == m_bytes.size())
+        return;
+
     if (size > m_bytes.size())
         m_bytes.append(size - m_bytes.size(), 0x00);
     else
diff --git a/src/knx/core/qknxbytearray.h b/src/knx/core/qknxbytearray.h
index 4f1fdb1..efc1a02 100644
--- a/src/knx/core/qknxbytearray.h
+++ b/src/knx/core/qknxbytearray.h
@@ -92,7 +92,10 @@ public:
     void resize(int size);
 
     inline quint8 at(int i) const { return m_bytes.at(i); }
-    inline void set(int i, quint8 value) { m_bytes[i] = value; }
+    inline void set(int i, quint8 value) {
+        Q_ASSERT(i >= 0 && i < size());
+        m_bytes[i] = value;
+    }
 
     inline void setValue(int i, quint8 value)
     {