diff --git a/src/Microsoft.Extensions.HealthChecks.AzureStorage/AzureHealthCheckBuilderExtensions.cs b/src/Microsoft.Extensions.HealthChecks.AzureStorage/AzureHealthCheckBuilderExtensions.cs
index 4c917f2..5a06a3b 100644
--- a/src/Microsoft.Extensions.HealthChecks.AzureStorage/AzureHealthCheckBuilderExtensions.cs
+++ b/src/Microsoft.Extensions.HealthChecks.AzureStorage/AzureHealthCheckBuilderExtensions.cs
@@ -70,7 +70,7 @@ public static HealthCheckBuilder AddAzureTableStorageCheck(HealthCheckBuilder bu
 
                     var properties = await tableClient.GetServicePropertiesAsync().ConfigureAwait(false);
 
-                    if (String.IsNullOrWhiteSpace(tableName))
+                    if (!String.IsNullOrWhiteSpace(tableName))
                     {
                         var table = tableClient.GetTableReference(tableName);
 
@@ -150,7 +150,7 @@ public static HealthCheckBuilder AddAzureQueueStorageCheck(HealthCheckBuilder bu
 
                     var properties = await queueClient.GetServicePropertiesAsync().ConfigureAwait(false);
 
-                    if (String.IsNullOrWhiteSpace(queueName))
+                    if (!String.IsNullOrWhiteSpace(queueName))
                     {
                         var queue = queueClient.GetQueueReference(queueName);