diff --git a/src/crypto/internal/fips140/rsa/cast.go b/src/crypto/internal/fips140/rsa/cast.go
index ec7b5f3aeb..b900b32c88 100644
--- a/src/crypto/internal/fips140/rsa/cast.go
+++ b/src/crypto/internal/fips140/rsa/cast.go
@@ -171,6 +171,7 @@ func testPrivateKey() *PrivateKey {
 			N: N, E: 65537,
 		},
 		d: d, p: p, q: q, qInv: qInv, dP: dP, dQ: dQ,
+		fipsApproved: true,
 	}
 
 }