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-rw-r--r--include/json.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/json.h b/include/json.h
index e64151de..66f60e76 100644
--- a/include/json.h
+++ b/include/json.h
@@ -15,6 +15,8 @@ struct table;
#ifdef HAVE_LIBJANSSON
+#define JSON_SCHEMA_VERSION 1
+
#include <jansson.h>
json_t *binop_expr_json(const struct expr *expr, struct output_ctx *octx);