diff --git a/paper-api/src/main/java/org/bukkit/block/data/MultipleFacing.java b/paper-api/src/main/java/org/bukkit/block/data/MultipleFacing.java
index 4cb7ac581..e10a52555 100644
--- a/paper-api/src/main/java/org/bukkit/block/data/MultipleFacing.java
+++ b/paper-api/src/main/java/org/bukkit/block/data/MultipleFacing.java
@@ -10,7 +10,8 @@ import org.jetbrains.annotations.NotNull;
  * displayed on.
  * <br>
  * Some blocks may not be able to have faces on all directions, use
- * {@link #getAllowedFaces()} to get all possible faces for this block.
+ * {@link #getAllowedFaces()} to get all possible faces for this block. It is
+ * not valid to call any methods on non-allowed faces.
  */
 public interface MultipleFacing extends BlockData {