diff --git a/src/fsfw/datapool/PoolEntry.cpp b/src/fsfw/datapool/PoolEntry.cpp
index 7e922bcb..a74e6306 100644
--- a/src/fsfw/datapool/PoolEntry.cpp
+++ b/src/fsfw/datapool/PoolEntry.cpp
@@ -22,7 +22,7 @@ PoolEntry<T>::PoolEntry(std::initializer_list<T> initValues, bool setValid)
 }
 
 template <typename T>
-PoolEntry<T>::PoolEntry(T* initValue, uint8_t setLength, bool setValid)
+PoolEntry<T>::PoolEntry(const T* initValue, uint8_t setLength, bool setValid)
     : length(setLength), valid(setValid) {
   this->address = new T[this->length]();
   if (initValue != nullptr) {
diff --git a/src/fsfw/datapool/PoolEntry.h b/src/fsfw/datapool/PoolEntry.h
index 8bf9a41c..4010f78d 100644
--- a/src/fsfw/datapool/PoolEntry.h
+++ b/src/fsfw/datapool/PoolEntry.h
@@ -65,7 +65,7 @@ class PoolEntry : public PoolEntryIF {
    * @param setValid
    * Sets the initialization flag. It is invalid by default.
    */
-  PoolEntry(T* initValue, uint8_t setLength = 1, bool setValid = false);
+  PoolEntry(const T* initValue, uint8_t setLength = 1, bool setValid = false);
 
   //! Explicitely deleted copy ctor, copying is not allowed.
   PoolEntry(const PoolEntry&) = delete;