diff --git a/DocsBr.Tests/IEAmazonasValidatorTests.cs b/DocsBr.Tests/IEAmazonasValidatorTests.cs
index be40d29..1e922f7 100644
--- a/DocsBr.Tests/IEAmazonasValidatorTests.cs
+++ b/DocsBr.Tests/IEAmazonasValidatorTests.cs
@@ -6,12 +6,12 @@ namespace DocsBr.Tests
     [TestClass]
     public class IEAmazonasValidatorTests : IEValidatorTests
     {
-        private static string[] validValues = 
+        private static string[] validValues =
         {
-            "04.345.678-2", "04.193.980-8", "06.200.021-7",	"07.000.507-9", "04.104.862-8"
+            "05.480.079-0", "02.468.135-0", "05.111.222-1", "04.345.678-2", "08.642.097-6", "04.193.980-8", "06.200.021-7",	"07.000.507-9", "04.104.862-8"
         };
 
-        private static string[] invalidValues = 
+        private static string[] invalidValues =
         {
             "04.345.678-3", "04.193.980-9", "06.200.021-8",	"07.000.507-0", "04.104.862-9"
         };
diff --git a/DocsBr/Validation/IE/IEAmazonasValidator.cs b/DocsBr/Validation/IE/IEAmazonasValidator.cs
index d09898a..0b7f71c 100644
--- a/DocsBr/Validation/IE/IEAmazonasValidator.cs
+++ b/DocsBr/Validation/IE/IEAmazonasValidator.cs
@@ -62,7 +62,7 @@ private bool HasValidCheckDigits()
             string number = this.inscEstadual.Substring(0, this.inscEstadual.Length - 1);
 
             DigitoVerificador digitoVerificador = new DigitoVerificador(number)
-                                                        .Substituindo("0", 0, 1);
+                                                        .Substituindo("0", 10, 11);
             return digitoVerificador.CalculaDigito() == this.inscEstadual.Substring(this.inscEstadual.Length - 1, 1);
         }
     }