diff --git a/docs/instrumenting/content_negotiation.md b/docs/instrumenting/content_negotiation.md
index 17d328b7..dd33ac93 100644
--- a/docs/instrumenting/content_negotiation.md
+++ b/docs/instrumenting/content_negotiation.md
@@ -21,7 +21,7 @@ the target will pick the best available Content Type for its reply.
 
 ### Supported Protocols
 
-The following protocols are be supported by Prometheus:
+The following protocols are supported by Prometheus:
 
 1. `PrometheusProto` - Binary protobuf format
 2. `PrometheusText0.0.4` - Prometheus text format version 0.0.4