diff --git a/QueryKit.IntegrationTests/Tests/FilterParsingRegressionTests.cs b/QueryKit.IntegrationTests/Tests/FilterParsingRegressionTests.cs
index f192c3d..9151f72 100644
--- a/QueryKit.IntegrationTests/Tests/FilterParsingRegressionTests.cs
+++ b/QueryKit.IntegrationTests/Tests/FilterParsingRegressionTests.cs
@@ -297,9 +297,12 @@ public async Task sort_direction_after_double_space_is_read()
 
     [Theory]
     [InlineData("""Tags ^$ "sweet" """, new[] { "pancakes" })]
+    [InlineData("""Tags !^$ "sweet" """, new[] { "stew", "bread", "water" })]
     [InlineData("""Tags ^$* "WINNER" """, new[] { "bread" })]
+    [InlineData("""Tags !^$* "WINNER" """, new[] { "pancakes", "stew", "water" })]
     [InlineData("""Tags %^$ "dinner" """, new[] { "stew", "water" })]
-    public async Task has_returns_matching_rows(string input, string[] expectedTitles)
+    [InlineData("""Tags %!^$ "dinner" """, new[] { "pancakes", "bread" })]
+    public async Task has_and_does_not_have_return_matching_rows(string input, string[] expectedTitles)
     {
         // Arrange
         var testingServiceScope = new TestingServiceScope();
diff --git a/QueryKit.UnitTests/FilterParserTests.cs b/QueryKit.UnitTests/FilterParserTests.cs
index 420ec16..1e04e5a 100644
--- a/QueryKit.UnitTests/FilterParserTests.cs
+++ b/QueryKit.UnitTests/FilterParserTests.cs
@@ -749,7 +749,7 @@ public void primitive_collection_does_not_have()
         var input = """Tags !^$ "winner" """;
         var filterExpression = FilterParser.ParseFilter<Recipe>(input);
         filterExpression.ToDisplayString().Should()
-            .Be(""""x => x.Tags.Any(z => (z != "winner"))"""");
+            .Be(""""x => Not(x.Tags.Any(z => (z == "winner")))"""");
     }
 
     [Fact]
@@ -767,7 +767,7 @@ public void primitive_collection_does_not_have_case_insensitive()
         var input = """Tags !^$* "winner" """;
         var filterExpression = FilterParser.ParseFilter<Recipe>(input);
         filterExpression.ToDisplayString().Should()
-            .Be(""""x => x.Tags.Any(z => (z.ToLower() != "winner".ToLower()))"""");
+            .Be(""""x => Not(x.Tags.Any(z => (z.ToLower() == "winner".ToLower())))"""");
     }
 
     [Fact]
diff --git a/QueryKit.UnitTests/FilterParsingRegressionTests.cs b/QueryKit.UnitTests/FilterParsingRegressionTests.cs
index 2116f59..4f90344 100644
--- a/QueryKit.UnitTests/FilterParsingRegressionTests.cs
+++ b/QueryKit.UnitTests/FilterParsingRegressionTests.cs
@@ -269,9 +269,12 @@ public void sort_direction_after_extra_white_space_is_read(string input)
 
     [Theory]
     [InlineData("""Tags ^$ "sweet" """, new[] { "pancakes" })]
+    [InlineData("""Tags !^$ "sweet" """, new[] { "stew", "bread", "water" })]
     [InlineData("""Tags ^$* "WINNER" """, new[] { "bread" })]
+    [InlineData("""Tags !^$* "WINNER" """, new[] { "pancakes", "stew", "water" })]
     [InlineData("""Tags %^$ "dinner" """, new[] { "stew", "water" })]
-    public void has_returns_matching_rows(string input, string[] expectedTitles)
+    [InlineData("""Tags %!^$ "dinner" """, new[] { "pancakes", "bread" })]
+    public void has_and_does_not_have_return_matching_rows(string input, string[] expectedTitles)
     {
         var recipes = new[]
         {
diff --git a/QueryKit/Operators/ComparisonOperator.cs b/QueryKit/Operators/ComparisonOperator.cs
index 97c959a..f60071b 100644
--- a/QueryKit/Operators/ComparisonOperator.cs
+++ b/QueryKit/Operators/ComparisonOperator.cs
@@ -803,7 +803,7 @@ public override Expression GetExpression<T>(Expression left, Expression right, T
                  left.Type.GetGenericTypeDefinition() == typeof(IList<>) ||
                  typeof(IEnumerable<>).IsAssignableFrom(left.Type.GetGenericTypeDefinition())))
             {
-                return GetCollectionExpression(left, right, Expression.NotEqual, UsesAll);
+                return Expression.Not(GetCollectionExpression(left, right, Expression.Equal, UsesAll));
             }
             
             throw new QueryKitParsingException("DoesNotHaveType is only supported for collections");