diff --git a/AltStoreCore/Model/AltStore.xcdatamodeld/AltStore 11.xcdatamodel/contents b/AltStoreCore/Model/AltStore.xcdatamodeld/AltStore 11.xcdatamodel/contents
index cceed50f..94c3b425 100644
--- a/AltStoreCore/Model/AltStore.xcdatamodeld/AltStore 11.xcdatamodel/contents	
+++ b/AltStoreCore/Model/AltStore.xcdatamodeld/AltStore 11.xcdatamodel/contents	
@@ -103,6 +103,7 @@
         <attribute name="externalURL" optional="YES" attributeType="URI"/>
         <attribute name="identifier" attributeType="String"/>
         <attribute name="imageURL" optional="YES" attributeType="URI"/>
+        <attribute name="isDuplicate" optional="YES" attributeType="Boolean" usesScalarValueType="YES"/>
         <attribute name="isSilent" attributeType="Boolean" defaultValueString="YES" usesScalarValueType="YES"/>
         <attribute name="sortIndex" attributeType="Integer 32" defaultValueString="0" usesScalarValueType="YES"/>
         <attribute name="sourceIdentifier" optional="YES" attributeType="String"/>
diff --git a/AltStoreCore/Model/NewsItem.swift b/AltStoreCore/Model/NewsItem.swift
index 22e86eb8..62fdb9db 100644
--- a/AltStoreCore/Model/NewsItem.swift
+++ b/AltStoreCore/Model/NewsItem.swift
@@ -32,6 +32,15 @@ public class NewsItem: NSManagedObject, Decodable, Fetchable
     @NSManaged public var storeApp: StoreApp?
     @NSManaged public var source: Source?
     
+    @objc public var isDuplicate: Bool {
+        if self.source == nil { return false }
+        
+        // Hide news from sources that begin with the SideStore identifier, and aren't from the same source as the current SideStore source
+        if self.source!.identifier.starts(with: Bundle.Info.appbundleIdentifier) && self.source!.identifier != Source.altStoreIdentifier { return true }
+        
+        return false
+    }
+    
     private enum CodingKeys: String, CodingKey
     {
         case identifier
@@ -86,6 +95,9 @@ public extension NewsItem
 {
     @nonobjc class func fetchRequest() -> NSFetchRequest<NewsItem>
     {
-        return NSFetchRequest<NewsItem>(entityName: "NewsItem")
+        let fetchRequest = NSFetchRequest<NewsItem>(entityName: "NewsItem")
+        fetchRequest.predicate = NSPredicate(format: "%K == NO",
+                                             #keyPath(NewsItem.isDuplicate))
+        return fetchRequest
     }
 }