diff --git a/spring-vault-core/src/main/java/org/springframework/vault/support/SslConfiguration.java b/spring-vault-core/src/main/java/org/springframework/vault/support/SslConfiguration.java
index b6f207c6f..8c280df80 100644
--- a/spring-vault-core/src/main/java/org/springframework/vault/support/SslConfiguration.java
+++ b/spring-vault-core/src/main/java/org/springframework/vault/support/SslConfiguration.java
@@ -341,7 +341,7 @@ public static SslConfiguration create(Resource keyStore, @Nullable char[] keySto
 			@Nullable char[] trustStorePassword) {
 
 		Assert.notNull(keyStore, "KeyStore must not be null");
-		Assert.isTrue(keyStore.exists(), () -> String.format("KeyStore %s does not exist", trustStore));
+		Assert.isTrue(keyStore.exists(), () -> String.format("KeyStore %s does not exist", keyStore));
 
 		Assert.notNull(trustStore, "TrustStore must not be null");
 		Assert.isTrue(trustStore.exists(), String.format("TrustStore %s does not exist", trustStore));