diff --git a/src/include/taler_signatures.h b/src/include/taler_signatures.h
index e8fc57ded..f55f0c2e4 100644
--- a/src/include/taler_signatures.h
+++ b/src/include/taler_signatures.h
@@ -167,11 +167,6 @@
  */
 #define TALER_SIGNATURE_MERCHANT_PAYMENT_OK 1104
 
-/**
- * Signature where the merchant confirms a refund increase
- */
-#define TALER_SIGNATURE_MERCHANT_REFUND_OK 1105
-
 /**
  * Signature where the merchant confirms that the user replayed
  * a payment for a browser session.