1 files changed, 5 insertions, 1 deletions
diff --git a/lib/rdoc/erbio.rb b/lib/rdoc/erbio.rb
index 42ce895fb3..2ebce9519f 100644
--- a/lib/rdoc/erbio.rb
+++ b/lib/rdoc/erbio.rb
@@ -21,7 +21,11 @@ class RDoc::ERBIO < ERB
   # Defaults +eoutvar+ to 'io', otherwise is identical to ERB's initialize
 
   def initialize str, safe_level = nil, trim_mode = nil, eoutvar = 'io'
-    super
+    if RUBY_VERSION >= '2.6'
+      super(str, trim_mode: trim_mode, eoutvar: eoutvar)
+    else
+      super
+    end
   end
 
   ##