diff --git a/src/compiler/crystal/macros.cr b/src/compiler/crystal/macros.cr
index 9dadf48af06c..ae2a2e73c25a 100644
--- a/src/compiler/crystal/macros.cr
+++ b/src/compiler/crystal/macros.cr
@@ -707,6 +707,10 @@ module Crystal::Macros
     def +(other : ArrayLiteral) : ArrayLiteral
     end
 
+    # Similar to `Array#-`.
+    def -(other : ArrayLiteral) : ArrayLiteral
+    end
+
     # Returns the type specified at the end of the array literal, if any.
     #
     # This refers to the part after brackets in `[] of String`.