add brackets to the list of characters graphite chokes on

diff --git a/src/utils_format_graphite.c b/src/utils_format_graphite.c
index c9516b4..b7d4494 100644 (file)
--- a/src/utils_format_graphite.c
+++ b/src/utils_format_graphite.c
@@ -29,7 +29,7 @@
 #include "utils_cache.h"
 #include "utils_parse_option.h"
 
-#define GRAPHITE_FORBIDDEN " \t\"\\:!/\n\r"
+#define GRAPHITE_FORBIDDEN " \t\"\\:!/()\n\r"
 
 /* Utils functions to format data sets in graphite format.
  * Largely taken from write_graphite.c as it remains the same formatting */