diff --git a/book/src/user/shielded-scan-grpc-server.md b/book/src/user/shielded-scan-grpc-server.md
index 4bd1bd67427..3ddd6ccb7a4 100644
--- a/book/src/user/shielded-scan-grpc-server.md
+++ b/book/src/user/shielded-scan-grpc-server.md
@@ -43,7 +43,7 @@ grpcurl -plaintext -d '{ "keys": { "key": ["sapling_extended_full_viewing_key"]
 
 This will start scanning for transactions in Zebra's state and in new blocks as they're validated.
 
-Or, to use the scanner gRPC server without streaming, try calling `RegisterKeys` with your Sapling extended full viewing key, waiting the scanner to cache some results, then calling `GetResults`.
+Or, to use the scanner gRPC server without streaming, try calling `RegisterKeys` with your Sapling extended full viewing key, waiting for the scanner to cache some results, then calling `GetResults`.
 
 ## gRPC Reflection