diff --git a/dotnet/src/Functions/Functions.UnitTests/Yaml/Plugins/CreateKernelPluginYamlTests.cs b/dotnet/src/Functions/Functions.UnitTests/Yaml/Plugins/CreateKernelPluginYamlTests.cs
index c8a636e3c7b9..b6db05a3aaf7 100644
--- a/dotnet/src/Functions/Functions.UnitTests/Yaml/Plugins/CreateKernelPluginYamlTests.cs
+++ b/dotnet/src/Functions/Functions.UnitTests/Yaml/Plugins/CreateKernelPluginYamlTests.cs
@@ -37,7 +37,7 @@ public PromptYamlKernelExtensionsTests()
 
             string yamlFile1Path = Path.Combine(plugin1Directory, $"{nameof(YAML)}.yaml");
             string yamlFile2Path = Path.Combine(plugin1Directory, $"{nameof(YAMLWithCustomSettings)}.yaml");
-            string yamlFile3Path = Path.Combine(plugin2Directory, $"{nameof(YAMLNoExecutionSettings)}.yaml");
+            string yamlFile3Path = Path.Combine(plugin2Directory, $"{nameof(YAMLNoExecutionSettings)}.yml");
 
             File.WriteAllText(yamlFile1Path, YAML);
             File.WriteAllText(yamlFile2Path, YAMLWithCustomSettings);
diff --git a/dotnet/src/Functions/Functions.Yaml/PromptYamlKernelExtensions.cs b/dotnet/src/Functions/Functions.Yaml/PromptYamlKernelExtensions.cs
index 8a61cfc99ab5..3feccc183e2b 100644
--- a/dotnet/src/Functions/Functions.Yaml/PromptYamlKernelExtensions.cs
+++ b/dotnet/src/Functions/Functions.Yaml/PromptYamlKernelExtensions.cs
@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
+using System.Linq;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
@@ -87,6 +88,7 @@ private static KernelPlugin CreatePluginFromPromptDirectoryYaml(
         IServiceProvider? services = null)
     {
         const string YamlFilePattern = "*.yaml";
+        const string YmlFilePattern = "*.yml";
 
         Verify.DirectoryExists(pluginDirectory);
         pluginName ??= new DirectoryInfo(pluginDirectory).Name;
@@ -96,7 +98,8 @@ private static KernelPlugin CreatePluginFromPromptDirectoryYaml(
         var functions = new List<KernelFunction>();
         ILogger logger = loggerFactory.CreateLogger(typeof(Kernel)) ?? NullLogger.Instance;
 
-        foreach (string functionFile in Directory.GetFiles(pluginDirectory, YamlFilePattern))
+        var yamlFiles = Directory.GetFiles(pluginDirectory, YamlFilePattern).Concat(Directory.GetFiles(pluginDirectory, YmlFilePattern));
+        foreach (string functionFile in yamlFiles)
         {
             var functionName = Path.GetFileName(functionFile);
             var functionYaml = File.ReadAllText(functionFile);