diff --git a/components/perfdata/graphitewriter.cpp b/components/perfdata/graphitewriter.cpp
index bef83e6f3..b679d72ba 100644
--- a/components/perfdata/graphitewriter.cpp
+++ b/components/perfdata/graphitewriter.cpp
@@ -261,6 +261,7 @@ void GraphiteWriter::SendMetrics(const std::vector<String>& metrics)
 void GraphiteWriter::SanitizeMetric(String& str)
 {
 	boost::replace_all(str, " ", "_");
+	boost::replace_all(str, ".", "_");
 	boost::replace_all(str, "-", "_");
 	boost::replace_all(str, "\\", "_");
 	boost::replace_all(str, "/", "_");