diff --git a/action.yml b/action.yml
index fdef48ef..6bf077c8 100644
--- a/action.yml
+++ b/action.yml
@@ -23,11 +23,11 @@ inputs:
   # Deprecated options, do not use. Will not be supported after February 1, 2019.
   extension-csv:
     description: 'Deprecated! Use extensions instead.'
-    deprecationMessage: 'The extensions property will not be supported after February 1, 2020. Use extensions instead.'
+    deprecationMessage: 'The extension-csv property will not be supported after February 1, 2020. Use extensions instead.'
     required: false
   ini-values-csv:
     description: 'Deprecated! Use ini-values instead.'
-    deprecationMessage: 'The ini-values property will not be supported after February 1, 2020. Use ini-values instead.'
+    deprecationMessage: 'The ini-values-csv property will not be supported after February 1, 2020. Use ini-values instead.'
     required: false
 runs:
   using: 'node12'