diff --git a/Sources/DispatchQueue+CoreStore.swift b/Sources/DispatchQueue+CoreStore.swift
index 35fda012..4e9772c3 100644
--- a/Sources/DispatchQueue+CoreStore.swift
+++ b/Sources/DispatchQueue+CoreStore.swift
@@ -81,27 +81,20 @@ extension DispatchQueue {
 
         return self.sync { autoreleasepool(invoking: closure) }
     }
-
-    @nonobjc @inline(__always)
-    internal func cs_sync<T>(
-        _ closure: () throws(any Swift.Error) -> T
-    ) throws(any Swift.Error) -> T {
-
-        return try self.sync { try autoreleasepool(invoking: closure) }
-    }
-
     @nonobjc @inline(__always)
     internal func cs_sync<T>(
         _ closure: () throws(CoreStoreError) -> T
     ) throws(CoreStoreError) -> T {
 
         do {
-
             return try self.sync { try autoreleasepool(invoking: closure) }
-        }
-        catch {
-
-            throw CoreStoreError(error)
+        } catch let error {
+            switch error {
+            case let error as CoreStoreError:
+                throw error
+            default:
+                throw CoreStoreError(error)
+            }
         }
     }