diff --git a/public/app/plugins/datasource/prometheus/mode-prometheus.js b/public/app/plugins/datasource/prometheus/mode-prometheus.js
index 1e93f8c9a60..094faf40f85 100644
--- a/public/app/plugins/datasource/prometheus/mode-prometheus.js
+++ b/public/app/plugins/datasource/prometheus/mode-prometheus.js
@@ -46,7 +46,7 @@ var PrometheusHighlightRules = function() {
       regex : "[a-zA-Z_$][a-zA-Z0-9_$]*\\b"
     }, {
       token : "keyword.operator",
-      regex : "\\+|\\-|\\*|\\/|%|\\^|=|==|!=|<=|>=|<|>|=\\~|!\\~"
+      regex : "\\+|\\-|\\*|\\/|%|\\^|=|==|!=|<=|>=|<|>"
     }, {
       token : "paren.lparen",
       regex : "[[(]"