diff --git a/main/json.c b/main/json.c
index 9f42f0a..f45d585 100644
--- a/main/json.c
+++ b/main/json.c
@@ -825,6 +825,7 @@ struct ast_json *ast_json_vpack(char const *format, va_list ap)
 			ast_log(LOG_ERROR,
 				"Error building JSON from '%s': %s.\n",
 				format, error.text);
+			ast_log_backtrace();
 		}
 	}
 	return r;