diff --git a/providers/openai/call_useragent.go b/providers/openai/call_useragent.go
index 60527a01935aad8639a07ca4b71130059bd85411..bc5b8b9c26a3f6a36d2356c1a6a3731f0525e545 100644
--- a/providers/openai/call_useragent.go
+++ b/providers/openai/call_useragent.go
@@ -12,7 +12,7 @@ import (
 //
 // When noDefaultUA is true the SDK's own User-Agent is preserved and no
 // override is applied (needed for providers like OpenRouter, which reject
-// User-Agents headers they don't expect).
+// User-Agent headers they don't expect).
 func callUARequestOptions(call fantasy.Call, noDefaultUA bool) []option.RequestOption {
 	if noDefaultUA {
 		return nil