diff --git a/src/WireMock.Net/Matchers/Request/RequestMessageBodyMatcher.cs b/src/WireMock.Net/Matchers/Request/RequestMessageBodyMatcher.cs
index 36d79009..f5e13047 100644
--- a/src/WireMock.Net/Matchers/Request/RequestMessageBodyMatcher.cs
+++ b/src/WireMock.Net/Matchers/Request/RequestMessageBodyMatcher.cs
@@ -104,7 +104,7 @@ public class RequestMessageBodyMatcher : IRequestMatcher
     /// Initializes a new instance of the <see cref="RequestMessageBodyMatcher"/> class.
     /// </summary>
     /// <param name="func">The function.</param>
-    public RequestMessageBodyMatcher(Func<IBodyData, bool> func)
+    public RequestMessageBodyMatcher(Func<IBodyData?, bool> func)
     {
         BodyDataFunc = Guard.NotNull(func);
     }
diff --git a/src/WireMock.Net/Matchers/Request/RequestMessageParamMatcher.cs b/src/WireMock.Net/Matchers/Request/RequestMessageParamMatcher.cs
index 949ed7de..41311838 100644
--- a/src/WireMock.Net/Matchers/Request/RequestMessageParamMatcher.cs
+++ b/src/WireMock.Net/Matchers/Request/RequestMessageParamMatcher.cs
@@ -53,7 +53,8 @@ public class RequestMessageParamMatcher : IRequestMatcher
     /// <param name="key">The key.</param>
     /// <param name="ignoreCase">Defines if the key should be matched using case-ignore.</param>
     /// <param name="values">The values.</param>
-    public RequestMessageParamMatcher(MatchBehaviour matchBehaviour, string key, bool ignoreCase, string[]? values) : this(matchBehaviour, key, ignoreCase, values?.Select(value => new ExactMatcher(matchBehaviour, ignoreCase, false, MatchOperator.And, value)).Cast<IStringMatcher>().ToArray())
+    public RequestMessageParamMatcher(MatchBehaviour matchBehaviour, string key, bool ignoreCase, params string[]? values) :
+        this(matchBehaviour, key, ignoreCase, values?.Select(value => new ExactMatcher(matchBehaviour, ignoreCase, false, MatchOperator.And, value)).Cast<IStringMatcher>().ToArray())
     {
     }
 
@@ -64,7 +65,7 @@ public class RequestMessageParamMatcher : IRequestMatcher
     /// <param name="key">The key.</param>
     /// <param name="ignoreCase">Defines if the key should be matched using case-ignore.</param>
     /// <param name="matchers">The matchers.</param>
-    public RequestMessageParamMatcher(MatchBehaviour matchBehaviour, string key, bool ignoreCase, IStringMatcher[]? matchers)
+    public RequestMessageParamMatcher(MatchBehaviour matchBehaviour, string key, bool ignoreCase, params IStringMatcher[]? matchers)
     {
         MatchBehaviour = matchBehaviour;
         Key = Guard.NotNull(key);
@@ -95,7 +96,7 @@ public class RequestMessageParamMatcher : IRequestMatcher
             return MatchScores.ToScore(requestMessage.Query != null && Funcs.Any(f => f(requestMessage.Query)));
         }
 
-        var valuesPresentInRequestMessage = ((RequestMessage)requestMessage).GetParameter(Key!, IgnoreCase ?? false);
+        var valuesPresentInRequestMessage = ((RequestMessage)requestMessage).GetParameter(Key, IgnoreCase ?? false);
         if (valuesPresentInRequestMessage == null)
         {
             // Key is not present at all, just return Mismatch
diff --git a/src/WireMock.Net/Owin/Mappers/OwinRequestMapper.cs b/src/WireMock.Net/Owin/Mappers/OwinRequestMapper.cs
index 29afe592..ccd00f43 100644
--- a/src/WireMock.Net/Owin/Mappers/OwinRequestMapper.cs
+++ b/src/WireMock.Net/Owin/Mappers/OwinRequestMapper.cs
@@ -68,7 +68,7 @@ namespace WireMock.Owin.Mappers
                 body = await BodyParser.ParseAsync(bodyParserSettings).ConfigureAwait(false);
             }
 
-            return new RequestMessage(urlDetails, method, clientIP, body, headers, cookies) { DateTime = DateTime.UtcNow };
+            return new RequestMessage(options, urlDetails, method, clientIP, body, headers, cookies) { DateTime = DateTime.UtcNow };
         }
 
         private static (UrlDetails UrlDetails, string ClientIP) ParseRequest(IRequest request)
diff --git a/test/WireMock.Net.Tests/RequestMatchers/RequestMessageParamMatcherTests.cs b/test/WireMock.Net.Tests/RequestMatchers/RequestMessageParamMatcherTests.cs
index 048040e6..58a929b1 100644
--- a/test/WireMock.Net.Tests/RequestMatchers/RequestMessageParamMatcherTests.cs
+++ b/test/WireMock.Net.Tests/RequestMatchers/RequestMessageParamMatcherTests.cs
@@ -1,7 +1,10 @@
+using FluentAssertions;
 using NFluent;
 using WireMock.Matchers;
 using WireMock.Matchers.Request;
 using WireMock.Models;
+using WireMock.Owin;
+using WireMock.Types;
 using Xunit;
 
 namespace WireMock.Net.Tests.RequestMatchers
@@ -172,5 +175,25 @@ namespace WireMock.Net.Tests.RequestMatchers
             // Assert
             Check.That(score).IsEqualTo(1.0d);
         }
+
+        // Issue #849
+        [Fact]
+        public void RequestMessageParamMatcher_With1ParamContainingComma_Using_QueryParameterMultipleValueSupport_NoComma()
+        {
+            // Assign
+            var options = new WireMockMiddlewareOptions
+            {
+                QueryParameterMultipleValueSupport = QueryParameterMultipleValueSupport.NoComma
+            };
+            var requestMessage = new RequestMessage(options, new UrlDetails("http://localhost?query=SELECT id, value FROM table WHERE id = 1&test=42"), "GET", "127.0.0.1");
+            var matcher = new RequestMessageParamMatcher(MatchBehaviour.AcceptOnMatch, "query", false, "SELECT id, value FROM table WHERE id = 1");
+
+            // Act
+            var result = new RequestMatchResult();
+            double score = matcher.GetMatchingScore(requestMessage, result);
+
+            // Assert
+            score.Should().Be(1.0);
+        }
     }
 }
\ No newline at end of file
diff --git a/test/WireMock.Net.Tests/Util/QueryStringParserTests.cs b/test/WireMock.Net.Tests/Util/QueryStringParserTests.cs
index c273c297..7ef71388 100644
--- a/test/WireMock.Net.Tests/Util/QueryStringParserTests.cs
+++ b/test/WireMock.Net.Tests/Util/QueryStringParserTests.cs
@@ -274,7 +274,7 @@ public class QueryStringParserTests
     }
 
     [Fact]
-    public void Parse_With1ParamContainingSpacesAndEqualSign()
+    public void Parse_With1ParamContainingSpacesSingleQuoteAndEqualSign()
     {
         // Assign
         string query = "?q=SELECT Id from User where username='user@gmail.com'";
@@ -287,6 +287,22 @@ public class QueryStringParserTests
         result["q"].Should().Equal(new WireMockList<string>("SELECT Id from User where username='user@gmail.com'"));
     }
 
+    // Issue #849
+    [Fact]
+    public void Parse_With1ParamContainingComma_Using_QueryParameterMultipleValueSupport_NoComma()
+    {
+        // Assign
+        string query = "?query=SELECT id, value FROM table WHERE id = 1&test=42";
+
+        // Act
+        var result = QueryStringParser.Parse(query, QueryParameterMultipleValueSupport.NoComma);
+
+        // Assert
+        result.Count.Should().Be(2);
+        result["query"].Should().Equal(new WireMockList<string>("SELECT id, value FROM table WHERE id = 1"));
+        result["test"].Should().Equal(new WireMockList<string>("42"));
+    }
+
     [Fact]
     public void Parse_WithComplex()
     {
diff --git a/test/WireMock.Net.Tests/WireMockServerTests.WithParam.cs b/test/WireMock.Net.Tests/WireMockServerTests.WithParam.cs
new file mode 100644
index 00000000..f4d9fcf1
--- /dev/null
+++ b/test/WireMock.Net.Tests/WireMockServerTests.WithParam.cs
@@ -0,0 +1,46 @@
+using System;
+using System.Net;
+using System.Threading.Tasks;
+using FluentAssertions;
+using WireMock.RequestBuilders;
+using WireMock.ResponseBuilders;
+using WireMock.Server;
+using WireMock.Settings;
+using WireMock.Types;
+using Xunit;
+
+namespace WireMock.Net.Tests;
+
+public partial class WireMockServerTests
+{
+    [Theory]
+    [InlineData("SELECT id, value FROM table WHERE id = 1")]
+    [InlineData("select id, name, value from table where id in (1, 2, 3, 4, 5)")]
+    public async Task WireMockServer_WithParam_QueryParameterMultipleValueSupport_NoComma_Should_Ignore_Comma(string queryValue)
+    {
+        // Arrange
+        var settings = new WireMockServerSettings
+        {
+            QueryParameterMultipleValueSupport = QueryParameterMultipleValueSupport.NoComma
+        };
+        var server = WireMockServer.Start(settings);
+        server.Given(
+                Request.Create()
+                    .UsingGet()
+                    .WithPath("/foo")
+                    .WithParam("query", queryValue)
+            )
+            .RespondWith(
+                Response.Create().WithStatusCode(200)
+            );
+
+        // Act
+        var requestUri = new Uri($"http://localhost:{server.Port}/foo?query={queryValue}");
+        var response = await server.CreateClient().GetAsync(requestUri).ConfigureAwait(false);
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+
+        server.Stop();
+    }
+}
\ No newline at end of file