diff --git a/src/fsfw/container/FixedArrayList.h b/src/fsfw/container/FixedArrayList.h
index 78184e35..6ae7da41 100644
--- a/src/fsfw/container/FixedArrayList.h
+++ b/src/fsfw/container/FixedArrayList.h
@@ -20,11 +20,11 @@ class FixedArrayList : public ArrayList<T, count_t> {
   FixedArrayList() : ArrayList<T, count_t>(data, MAX_SIZE) {}
 
   FixedArrayList(const FixedArrayList& other) : ArrayList<T, count_t>(data, MAX_SIZE) {
-    for (size_t idx = 0; idx < sizeof(data); idx++) {
-      data[idx] = other.data[idx];
-    }
     this->entries = data;
     this->size = other.size;
+    for (size_t idx = 0; idx < this->size; idx++) {
+      data[idx] = other.data[idx];
+    }
   }
 
   FixedArrayList& operator=(FixedArrayList other) {