diff --git a/core/env/spiffeid.go b/core/env/spiffeid.go
index b6d4d6d1..3e0cdd07 100644
--- a/core/env/spiffeid.go
+++ b/core/env/spiffeid.go
@@ -21,7 +21,6 @@ import (
 // prefix is used.
 func SpiffeIdPrefixForSentinel() string {
 	p := os.Getenv("VSECM_SENTINEL_SPIFFEID_PREFIX")
-	t := SpiffeTrustDomain()
 
 	if strings.HasPrefix(p, "^") {
 		if !strings.HasPrefix(p, "^spiffe://") {