diff --git a/cmd/tpm.c b/cmd/tpm.c
index add6bfb..6edf3e9 100644
--- a/cmd/tpm.c
+++ b/cmd/tpm.c
@@ -448,7 +448,7 @@
 	int rc;
 
 	rc = uclass_first_device(UCLASS_TPM, devp);
-	if (rc) {
+	if (rc || !*devp) {
 		printf("Could not find TPM (ret=%d)\n", rc);
 		return CMD_RET_FAILURE;
 	}