diff --git a/spring-vault-core/src/main/java/org/springframework/vault/core/VaultTransitTemplate.java b/spring-vault-core/src/main/java/org/springframework/vault/core/VaultTransitTemplate.java
index b4922f70..909cd49e 100644
--- a/spring-vault-core/src/main/java/org/springframework/vault/core/VaultTransitTemplate.java
+++ b/spring-vault-core/src/main/java/org/springframework/vault/core/VaultTransitTemplate.java
@@ -264,7 +264,7 @@ public class VaultTransitTemplate implements VaultTransitOperations {
 	@Override
 	public Plaintext decrypt(String keyName, Ciphertext ciphertext) {
 
-		Assert.hasText(keyName, "Ciphertext must not be null");
+		Assert.hasText(keyName, "keyName must not be null");
 
 		byte[] plaintext = decrypt(keyName, ciphertext.getCiphertext(),
 				ciphertext.getContext());