diff --git a/src/PowerShellEditorServices.Host/CodeLens/ReferencesCodeLensProvider.cs b/src/PowerShellEditorServices.Host/CodeLens/ReferencesCodeLensProvider.cs
index bed4559a2..abe29a997 100644
--- a/src/PowerShellEditorServices.Host/CodeLens/ReferencesCodeLensProvider.cs
+++ b/src/PowerShellEditorServices.Host/CodeLens/ReferencesCodeLensProvider.cs
@@ -109,9 +109,9 @@ private static string GetFileUri(string filePath)
         {
             // If the file isn't untitled, return a URI-style path
             return
-                !filePath.StartsWith("untitled")
+                !filePath.StartsWith("untitled") && !filePath.StartsWith("inmemory")
                     ? new Uri("file://" + filePath).AbsoluteUri
                     : filePath;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/PowerShellEditorServices.Protocol/Server/LanguageServer.cs b/src/PowerShellEditorServices.Protocol/Server/LanguageServer.cs
index 31fc68a4f..684d86d7c 100644
--- a/src/PowerShellEditorServices.Protocol/Server/LanguageServer.cs
+++ b/src/PowerShellEditorServices.Protocol/Server/LanguageServer.cs
@@ -1358,7 +1358,7 @@ public static string GetFileUri(string filePath)
         {
             // If the file isn't untitled, return a URI-style path
             return
-                !filePath.StartsWith("untitled")
+                !filePath.StartsWith("untitled") && !filePath.StartsWith("inmemory")
                     ? new Uri("file://" + filePath).AbsoluteUri
                     : filePath;
         }
diff --git a/test/PowerShellEditorServices.Test/Session/WorkspaceTests.cs b/test/PowerShellEditorServices.Test/Session/WorkspaceTests.cs
index 272cc891b..d40e59511 100644
--- a/test/PowerShellEditorServices.Test/Session/WorkspaceTests.cs
+++ b/test/PowerShellEditorServices.Test/Session/WorkspaceTests.cs
@@ -57,6 +57,7 @@ public void CanDetermineIsPathInMemory()
                 // Test short non-file paths
                 new { IsInMemory = true,  Path = "untitled:untitled-1" },
                 new { IsInMemory = true,  Path = shortUriForm },
+                new { IsInMemory = true, Path = "inmemory://foo.ps1" },
 
                 // Test long non-file path - known to have crashed PSES
                 new { IsInMemory = true,  Path = longUriForm },