diff --git a/src/functions/InModuleScope.ps1 b/src/functions/InModuleScope.ps1
index 9b9066b43..78f159fb1 100644
--- a/src/functions/InModuleScope.ps1
+++ b/src/functions/InModuleScope.ps1
@@ -176,7 +176,12 @@ function Get-CompatibleModule {
         if ($PesterPreference.Debug.WriteDebugMessages.Value) {
             Write-PesterDebugMessage -Scope Runtime "Searching for a module $ModuleName."
         }
-        $modules = @(& $SafeCommands['Get-Module'] -Name $ModuleName -All -ErrorAction Stop)
+        if ($ModuleName -match '(?<RootModule>\w+)/(?<NestedModule>\w+)') {
+            $modules = @(& $SafeCommands['Get-Module'] -Name $Matches['RootModule'] -All -ErrorAction Stop | & $SafeCommands['Select-Object'] -ExpandProperty NestedModules | & $SafeCommands['Where-Object'] { $_.Name -eq $Matches['NestedModule'] })
+        }
+        else {
+            $modules = @(& $SafeCommands['Get-Module'] -Name $ModuleName -All -ErrorAction Stop)
+        }
     }
     catch {
         throw "No modules named '$ModuleName' are currently loaded."
diff --git a/tst/functions/InModuleScope.Tests.ps1 b/tst/functions/InModuleScope.Tests.ps1
index 9f3f74fd1..4ac84d7ec 100644
--- a/tst/functions/InModuleScope.Tests.ps1
+++ b/tst/functions/InModuleScope.Tests.ps1
@@ -125,6 +125,29 @@ Describe 'Get-CompatibleModule' {
         }
     }
 
+    Context 'when module name matches a root and a nested module' {
+        BeforeAll {
+            $nestedModuleName = 'NestedModule'
+            $moduleName = 'RootWithNestedModule'
+            $moduleManifestPath = "TestDrive:/$moduleName.psd1"
+            New-Item -Path "TestDrive:/$nestedModuleName.psm1" -ItemType File -Force -ErrorAction Stop | Out-Null
+            New-ModuleManifest -Path $moduleManifestPath -NestedModules ".\$nestedModuleName.psm1"
+            Import-Module $moduleManifestPath -Force
+        }
+
+        AfterAll {
+            Get-Module $moduleName -ErrorAction SilentlyContinue | Remove-Module -Force
+        }
+
+        It 'should return a single ModuleInfo object' {
+            $moduleInfo = InPesterModuleScope { Get-CompatibleModule -ModuleName 'RootWithNestedModule/NestedModule' }
+            $moduleInfo | Should -Not -BeNullOrEmpty
+            @($moduleInfo).Count | Should -Be 1
+            $moduleInfo.Name | Should -Be 'NestedModule'
+            $moduleInfo.ModuleType | Should -Be 'Script'
+        }
+    }
+
 }
 
 Describe 'InModuleScope arguments and parameter binding' {
@@ -340,4 +363,4 @@ Describe 'Working with manifest modules' {
         $res = InModuleScope -ModuleName $moduleName -ScriptBlock { myPrivateFunction }
         $res | Should -Be 'real'
     }
-}
\ No newline at end of file
+}