diff --git a/src/compiler/crystal/semantic/bindings.cr b/src/compiler/crystal/semantic/bindings.cr
index 3dec1aff6dd1..eb4d0369cd32 100644
--- a/src/compiler/crystal/semantic/bindings.cr
+++ b/src/compiler/crystal/semantic/bindings.cr
@@ -111,7 +111,7 @@ module Crystal
       end
     end
 
-    def bind_to(nodes : Array)
+    def bind_to(nodes : Indexable)
       return if nodes.empty?
 
       bind do |dependencies|
diff --git a/src/compiler/crystal/semantic/main_visitor.cr b/src/compiler/crystal/semantic/main_visitor.cr
index e6204686ed9e..37a158055543 100644
--- a/src/compiler/crystal/semantic/main_visitor.cr
+++ b/src/compiler/crystal/semantic/main_visitor.cr
@@ -1873,7 +1873,7 @@ module Crystal
 
       @unreachable = then_unreachable && else_unreachable
 
-      node.bind_to [node.then, node.else]
+      node.bind_to({node.then, node.else})
 
       false
     end