diff --git a/signer/cosigner_nonce_cache_test.go b/signer/cosigner_nonce_cache_test.go
index f3ae459b..ea65696a 100644
--- a/signer/cosigner_nonce_cache_test.go
+++ b/signer/cosigner_nonce_cache_test.go
@@ -64,6 +64,7 @@ func TestClearNonces(t *testing.T) {
 
 	cnc := CosignerNonceCache{
 		threshold: 2,
+		cache:     new(NonceCache),
 	}
 
 	for i := 0; i < 10; i++ {