diff --git a/lib/prism/node_ext.rb b/lib/prism/node_ext.rb
index e39579f534..1a78759e2c 100644
--- a/lib/prism/node_ext.rb
+++ b/lib/prism/node_ext.rb
@@ -118,7 +118,7 @@ module Prism
         current = current.parent
       end
 
-      unless current.is_a?(ConstantReadNode) || current == nil
+      if !current.is_a?(ConstantReadNode) && !current.nil?
         raise DynamicPartsInConstantPathError, "Constant path contains dynamic parts. Cannot compute full name"
       end