diff --git a/forge-core/src/main/java/forge/card/CardRules.java b/forge-core/src/main/java/forge/card/CardRules.java
index e60061c4fdb..d0268c6a3c5 100644
--- a/forge-core/src/main/java/forge/card/CardRules.java
+++ b/forge-core/src/main/java/forge/card/CardRules.java
@@ -71,7 +71,8 @@ public final class CardRules implements ICardCharacteristics {
             specializedParts.put(CardStateName.SpecializeG, faces[6]);
         }
 
-        allFaces = Arrays.stream(faces).filter(Objects::nonNull).collect(Collectors.toUnmodifiableList());
+        // Android doesn't support toUnmodifiableList
+        allFaces = Arrays.stream(faces).filter(Objects::nonNull).collect(Collectors.toList());
 
         aiHints = cah;
         meldWith = "";