diff --git a/core/src/main/java/com/sk89q/worldedit/EditSession.java b/core/src/main/java/com/sk89q/worldedit/EditSession.java
index 96c5ccb1..d2674f2f 100644
--- a/core/src/main/java/com/sk89q/worldedit/EditSession.java
+++ b/core/src/main/java/com/sk89q/worldedit/EditSession.java
@@ -1729,7 +1729,7 @@ public class EditSession extends AbstractWorld implements HasFaweQueue, Lighting
 //            return changes = region.getArea();
 //        }
         // TODO fast replace
-        return this.replaceBlocks(region, filter, (replacement));
+        return this.replaceBlocks(region, filter, new BlockPattern(replacement));
     }