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-rw-r--r--src/exchange-tools/taler-exchange-offline.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/exchange-tools/taler-exchange-offline.c b/src/exchange-tools/taler-exchange-offline.c
index cf59fcb59..7deac3053 100644
--- a/src/exchange-tools/taler-exchange-offline.c
+++ b/src/exchange-tools/taler-exchange-offline.c
@@ -88,8 +88,10 @@
/**
* Show the offline signing key.
+ * The last component --by convention-- identifies the protocol version
+ * and should be incremented whenever the JSON format of the 'argument' changes.
*/
-#define OP_SETUP "exchange-setup"
+#define OP_SETUP "exchange-setup-0"
/**