diff --git a/AltTests/AltTests.swift b/AltTests/AltTests.swift
index 12d9d2b5..2eaab3ae 100644
--- a/AltTests/AltTests.swift
+++ b/AltTests/AltTests.swift
@@ -427,6 +427,37 @@ extension AltTests
         }
     }
     
+    func testPatternMatchingErrorCode() async throws
+    {
+        do
+        {
+            // ALTLocalizedError
+            throw OperationError.serverNotFound
+        }
+        catch ~OperationError.Code.serverNotFound
+        {
+            // Success
+        }
+        catch
+        {
+            XCTFail("Failed to catch error as OperationError.Code.serverNotFound: \(error)")
+        }
+        
+        do
+        {
+            // ALTErrorEnum
+            throw AuthenticationError(.noTeam)
+        }
+        catch ~AuthenticationErrorCode.noTeam
+        {
+            // Success
+        }
+        catch
+        {
+            XCTFail("Failed to catch error as AuthenticationErrorCode.noTeam: \(error)")
+        }
+    }
+    
     func testWithLocalizedTitle() async throws
     {
         let localizedTitle = "AltTest Failed"
diff --git a/Shared/Errors/ALTLocalizedError.swift b/Shared/Errors/ALTLocalizedError.swift
index 6e01fbc3..1d3aeaef 100644
--- a/Shared/Errors/ALTLocalizedError.swift
+++ b/Shared/Errors/ALTLocalizedError.swift
@@ -102,7 +102,7 @@ public extension ALTErrorCode
 {
     static var errorDomain: String {
         let typeName = String(reflecting: Self.self) // "\(Self.self)" doesn't include module name, but String(reflecting:) does.
-        let errorDomain = typeName.replacingOccurrences(of: "ErrorCode", with: "Error")
+        let errorDomain = typeName.replacingOccurrences(of: "ErrorCode", with: "Error").replacingOccurrences(of: "Error.Code", with: "Error")
         return errorDomain
     }
 }