diff --git a/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultClientProvider.java b/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultClientProvider.java
index c1e3994..537b0a0 100644
--- a/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultClientProvider.java
+++ b/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultClientProvider.java
@@ -182,8 +182,7 @@ private String getVaultAuthToken() throws ConfigurationException, VaultException
 
                 } catch (VaultException e) {
                     throw new ConfigurationException(
-                            String.format("Encountered error while authenticating with %s",
-                                    vaultAuthBackend)
+                            String.format("Encountered error while authenticating with %s: %s", vaultAuthBackend, e.getLocalizedMessage())
                     );
                 }
                 break;
diff --git a/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultStoragePlugin.java b/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultStoragePlugin.java
index bb097ea..d25d2f4 100644
--- a/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultStoragePlugin.java
+++ b/src/main/java/io/github/valfadeev/rundeck/plugin/vault/VaultStoragePlugin.java
@@ -269,8 +269,8 @@ private boolean isDir(String key) {
 
     protected void lookup(){
         try {
-            long ttl = getVaultClient().auth().lookupSelf().getTTL();
-            if (ttl <= guaranteedTokenValidity) {
+            LookupResponse lookupSelf = getVaultClient().auth().lookupSelf();
+            if (lookupSelf.getTTL() <= guaranteedTokenValidity || lookupSelf.getNumUses() < 0) {
                 loginVault(clientProvider);
             }
         } catch (VaultException e) {