diff --git a/pkg/collect/host_sysctl.go b/pkg/collect/host_sysctl.go
index c1bf69d90..8c2ef9d7b 100644
--- a/pkg/collect/host_sysctl.go
+++ b/pkg/collect/host_sysctl.go
@@ -8,6 +8,7 @@ import (
 	troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
 )
 
+// Ensure `CollectHostSysctl` implements `HostCollector` interface at compile time.
 var _ HostCollector = (*CollectHostSysctl)(nil)
 
 var execCommand = exec.Command