diff --git a/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Visitors/UInt32TypeVisitor.cs b/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Visitors/UInt32TypeVisitor.cs
index 12e63734..aeee660a 100644
--- a/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Visitors/UInt32TypeVisitor.cs
+++ b/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Visitors/UInt32TypeVisitor.cs
@@ -32,7 +32,7 @@ public override bool IsVisitable(Type type)
         /// <inheritdoc />
         public override void Visit(IAcceptor acceptor, KeyValuePair<string, Type> type, NamingStrategy namingStrategy, params Attribute[] attributes)
         {
-            this.Visit(acceptor, name: type.Key, title: null, dataType: "integer", dataFormat: null, attributes: attributes);
+            this.Visit(acceptor, name: type.Key, title: null, dataType: "integer", dataFormat: "int32", attributes: attributes);
         }
 
         /// <inheritdoc />
@@ -46,7 +46,7 @@ public override bool IsParameterVisitable(Type type)
         /// <inheritdoc />
         public override OpenApiSchema ParameterVisit(Type type, NamingStrategy namingStrategy)
         {
-            return this.ParameterVisit(dataType: "integer", dataFormat: null);
+            return this.ParameterVisit(dataType: "integer", dataFormat: "int32");
         }
 
         /// <inheritdoc />
@@ -60,7 +60,7 @@ public override bool IsPayloadVisitable(Type type)
         /// <inheritdoc />
         public override OpenApiSchema PayloadVisit(Type type, NamingStrategy namingStrategy)
         {
-            return this.PayloadVisit(dataType: "integer", dataFormat: null);
+            return this.PayloadVisit(dataType: "integer", dataFormat: "int32");
         }
     }
 }
diff --git a/test/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Tests/Visitors/UInt32TypeVisitorTests.cs b/test/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Tests/Visitors/UInt32TypeVisitorTests.cs
index 19323c95..0e4a4f15 100644
--- a/test/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Tests/Visitors/UInt32TypeVisitorTests.cs
+++ b/test/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Tests/Visitors/UInt32TypeVisitorTests.cs
@@ -74,7 +74,7 @@ public void Given_Type_When_IsPayloadVisitable_Invoked_Then_It_Should_Return_Res
         }
 
         [DataTestMethod]
-        [DataRow("integer", null)]
+        [DataRow("integer", "int32")]
         public void Given_Type_When_Visit_Invoked_Then_It_Should_Return_Result(string dataType, string dataFormat)
         {
             var name = "hello";
@@ -204,7 +204,7 @@ public void Given_OpenApiSchemaVisibilityAttribute_When_Visit_Invoked_Then_It_Sh
         }
 
         [DataTestMethod]
-        [DataRow("integer", null)]
+        [DataRow("integer", "int32")]
         public void Given_Type_When_ParameterVisit_Invoked_Then_It_Should_Return_Result(string dataType, string dataFormat)
         {
             var result = this._visitor.ParameterVisit(typeof(uint), this._strategy);
@@ -214,7 +214,7 @@ public void Given_Type_When_ParameterVisit_Invoked_Then_It_Should_Return_Result(
         }
 
         [DataTestMethod]
-        [DataRow("integer", null)]
+        [DataRow("integer", "int32")]
         public void Given_Type_When_PayloadVisit_Invoked_Then_It_Should_Return_Result(string dataType, string dataFormat)
         {
             var result = this._visitor.PayloadVisit(typeof(uint), this._strategy);