diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
index ddac58fe57d..4c5d3e82275 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
@@ -1260,21 +1260,24 @@ internal virtual void FillRequestStream(HttpRequestMessage request)
 
             foreach (var entry in WebSession.ContentHeaders)
             {
-                if (SkipHeaderValidation)
-                {
-                    request.Content.Headers.TryAddWithoutValidation(entry.Key, entry.Value);
-                }
-                else
+                if (!string.IsNullOrWhiteSpace(entry.Value))
                 {
-                    try
+                    if (SkipHeaderValidation)
                     {
-                        request.Content.Headers.Add(entry.Key, entry.Value);
+                        request.Content.Headers.TryAddWithoutValidation(entry.Key, entry.Value);
                     }
-                    catch (FormatException ex)
+                    else
                     {
-                        var outerEx = new ValidationMetadataException(WebCmdletStrings.ContentTypeException, ex);
-                        ErrorRecord er = new ErrorRecord(outerEx, "WebCmdletContentTypeException", ErrorCategory.InvalidArgument, ContentType);
-                        ThrowTerminatingError(er);
+                        try
+                        {
+                            request.Content.Headers.Add(entry.Key, entry.Value);
+                        }
+                        catch (FormatException ex)
+                        {
+                            var outerEx = new ValidationMetadataException(WebCmdletStrings.ContentTypeException, ex);
+                            ErrorRecord er = new ErrorRecord(outerEx, "WebCmdletContentTypeException", ErrorCategory.InvalidArgument, ContentType);
+                            ThrowTerminatingError(er);
+                        }
                     }
                 }
             }
diff --git a/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1 b/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
index d4ab2ff5009..2e234ea5940 100644
--- a/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
+++ b/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
@@ -447,6 +447,16 @@ Describe "Invoke-WebRequest tests" -Tags "Feature", "RequireAdminOnWindows" {
         $jsonContent.headers.Host | Should -Be $Uri.Authority
     }
 
+    It "Invoke-WebRequest with blank ContentType succeeds" {
+        $uri = Get-WebListenerUrl -Test 'Get'
+        $command = "Invoke-WebRequest -Uri '$uri' -ContentType ''"
+
+        $result = ExecuteWebCommand -command $command
+
+        # Validate response
+        ValidateResponse -response $result
+    }
+
     It "Validate Invoke-WebRequest -DisableKeepAlive" {
         # Operation options
         $uri = Get-WebListenerUrl -Test 'Get'
@@ -1995,6 +2005,16 @@ Describe "Invoke-RestMethod tests" -Tags "Feature", "RequireAdminOnWindows" {
         $result.Output.headers.'User-Agent' | Should -MatchExactly '.*\(Windows NT \d+\.\d*;.*\) PowerShell\/\d+\.\d+\.\d+.*'
     }
 
+    It "Invoke-RestMethod with blank ContentType succeeds" {
+        $uri = Get-WebListenerUrl -Test 'Get'
+        $command = "Invoke-RestMethod -Uri '$uri' -ContentType ''"
+
+        $result = ExecuteWebCommand -command $command
+
+        # Validate response
+        $result.Error | Should -BeNullOrEmpty
+    }
+
     It "Invoke-RestMethod returns headers dictionary" {
         $uri = Get-WebListenerUrl -Test 'Get'
         $command = "Invoke-RestMethod -Uri '$uri'"