diff --git a/colorcorrection/gammaramp.h b/colorcorrection/gammaramp.h
index 53ef606b57..b215af168a 100644
--- a/colorcorrection/gammaramp.h
+++ b/colorcorrection/gammaramp.h
@@ -42,6 +42,9 @@ struct GammaRamp {
     uint16_t *red = nullptr;
     uint16_t *green = nullptr;
     uint16_t *blue = nullptr;
+
+private:
+    Q_DISABLE_COPY(GammaRamp)
 };
 
 }