diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8e8d6685..4f3cf21f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1173,7 +1173,7 @@ packages:
         - monad-peel
         - Network-NineP
 
-    "Oliver Charles <ollie@ocharles.org.uk:
+    "Oliver Charles <ollie@ocharles.org.uk>":
         - engine-io
         - diff3
         - digestive-functors-aeson