diff --git a/src/semantic-router/pkg/extproc/router.go b/src/semantic-router/pkg/extproc/router.go
index f0a6a940..773fe1c8 100644
--- a/src/semantic-router/pkg/extproc/router.go
+++ b/src/semantic-router/pkg/extproc/router.go
@@ -37,7 +37,7 @@ type OpenAIRouter struct {
 }
 
 // Ensure OpenAIRouter implements the ext_proc calls
-var _ ext_proc.ExternalProcessorServer = &OpenAIRouter{}
+var _ ext_proc.ExternalProcessorServer = (*OpenAIRouter)(nil)
 
 // NewOpenAIRouter creates a new OpenAI API router instance
 func NewOpenAIRouter(configPath string) (*OpenAIRouter, error) {