diff --git a/src/kencodingprober.h b/src/kencodingprober.h
--- a/src/kencodingprober.h
+++ b/src/kencodingprober.h
@@ -110,6 +110,9 @@
 
     ~KEncodingProber();
 
+    KEncodingProber(const KEncodingProber &) = delete;
+    KEncodingProber& operator=(const KEncodingProber &) = delete;
+
     /**
      * reset the prober's internal state and data.
      */