diff --git a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpDictionaryBasedStringLocalizer.cs b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpDictionaryBasedStringLocalizer.cs
index 56625f5ac4..0cfe90d9ef 100644
--- a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpDictionaryBasedStringLocalizer.cs
+++ b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpDictionaryBasedStringLocalizer.cs
@@ -179,7 +179,7 @@ namespace Volo.Abp.Localization
                 : cultureName;
         }
 
-        public class CultureWrapperStringLocalizer : IStringLocalizer
+        public class CultureWrapperStringLocalizer : IStringLocalizer, IStringLocalizerSupportsInheritance
         {
             private readonly string _cultureName;
             private readonly AbpDictionaryBasedStringLocalizer _innerLocalizer;
@@ -203,6 +203,11 @@ namespace Volo.Abp.Localization
             {
                 return new CultureWrapperStringLocalizer(culture.Name, _innerLocalizer);
             }
+
+            public IEnumerable<LocalizedString> GetAllStrings(bool includeParentCultures, bool includeBaseLocalizers)
+            {
+                return _innerLocalizer.GetAllStrings(includeParentCultures, includeBaseLocalizers);
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpStringLocalizerExtensions.cs b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpStringLocalizerExtensions.cs
index 3e4a42603f..218f9c4164 100644
--- a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpStringLocalizerExtensions.cs
+++ b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpStringLocalizerExtensions.cs
@@ -1,15 +1,27 @@
 using System.Collections.Generic;
 using System.Reflection;
+using JetBrains.Annotations;
 using Microsoft.Extensions.Localization;
 using Volo.Abp.DynamicProxy;
+using Volo.Abp.Reflection;
 
 namespace Volo.Abp.Localization
 {
     public static class AbpStringLocalizerExtensions
     {
-        public static IStringLocalizer GetInternalLocalizer(this IStringLocalizer stringLocalizer)
+        [NotNull]
+        public static IStringLocalizer GetInternalLocalizer(
+            [NotNull] this IStringLocalizer stringLocalizer)
         {
-            var localizerField = stringLocalizer.GetType()
+            Check.NotNull(stringLocalizer, nameof(stringLocalizer));
+
+            var localizerType = stringLocalizer.GetType();
+            if (!ReflectionHelper.IsAssignableToGenericType(localizerType, typeof(StringLocalizer<>)))
+            {
+                return stringLocalizer;
+            }
+
+            var localizerField = localizerType
                 .GetField(
                     "_localizer",
                     BindingFlags.Instance | 
@@ -18,7 +30,7 @@ namespace Volo.Abp.Localization
 
             if (localizerField == null)
             {
-                return stringLocalizer;
+                throw new AbpException($"Could not find the _localizer field inside the {typeof(StringLocalizer<>).FullName} class. Probably its name has changed. Please report this issue to the ABP framework.");
             }
 
             return localizerField.GetValue(stringLocalizer) as IStringLocalizer;
diff --git a/framework/test/Volo.Abp.Localization.Tests/Volo/Abp/Localization/AbpLocalization_Tests.cs b/framework/test/Volo.Abp.Localization.Tests/Volo/Abp/Localization/AbpLocalization_Tests.cs
index 6f141e56f0..309e317997 100644
--- a/framework/test/Volo.Abp.Localization.Tests/Volo/Abp/Localization/AbpLocalization_Tests.cs
+++ b/framework/test/Volo.Abp.Localization.Tests/Volo/Abp/Localization/AbpLocalization_Tests.cs
@@ -15,10 +15,12 @@ namespace Volo.Abp.Localization
     public class AbpLocalization_Tests : AbpIntegratedTest<AbpLocalization_Tests.TestModule>
     {
         private readonly IStringLocalizer<LocalizationTestResource> _localizer;
+        private readonly IStringLocalizerFactory _localizerFactory;
 
         public AbpLocalization_Tests()
         {
             _localizer = GetRequiredService<IStringLocalizer<LocalizationTestResource>>();
+            _localizerFactory = GetRequiredService<IStringLocalizerFactory>();
         }
 
         [Fact]
@@ -29,6 +31,14 @@ namespace Volo.Abp.Localization
             internalLocalizer.ShouldBeOfType<AbpDictionaryBasedStringLocalizer>();
         }
 
+        [Fact]
+        public void AbpStringLocalizerExtensions_GetInternalLocalizer_Using_LocalizerFactory()
+        {
+            var internalLocalizer = _localizerFactory.Create(typeof(LocalizationTestResource)).GetInternalLocalizer();
+            internalLocalizer.ShouldNotBeNull();
+            internalLocalizer.ShouldBeOfType<AbpDictionaryBasedStringLocalizer>();
+        }
+
         [Fact]
         public void Should_Get_Same_Text_If_Not_Defined_Anywhere()
         {
@@ -173,6 +183,12 @@ namespace Volo.Abp.Localization
                           ls.Value == "Evren" &&
                           ls.ResourceNotFound == false
                 );
+
+                localizedStrings.ShouldContain(
+                    ls => ls.Name == "SeeYou" &&
+                          ls.Value == "See you" &&
+                          ls.ResourceNotFound == false
+                );
             }
         }
 
@@ -194,6 +210,12 @@ namespace Volo.Abp.Localization
                           ls.Value == "Evren" &&
                           ls.ResourceNotFound == false
                 );
+
+                localizedStrings.ShouldContain(
+                    ls => ls.Name == "SeeYou" &&
+                          ls.Value == "See you" &&
+                          ls.ResourceNotFound == false
+                );
             }
         }