diff --git a/lib/scalingo/client.rb b/lib/scalingo/client.rb
index 4f9b618..0c97402 100644
--- a/lib/scalingo/client.rb
+++ b/lib/scalingo/client.rb
@@ -27,7 +27,7 @@ def osc_fr1
         scalingo: self,
       )
     end
-    alias_method apps_api_osc_fr1 osc_fr1
+    alias_method :apps_api_osc_fr1, :osc_fr1
 
     def osc_secnum_fr1
       @osc_secnum_fr1 ||= Regional.new(
@@ -35,7 +35,7 @@ def osc_secnum_fr1
         scalingo: self,
       )
     end
-    alias_method apps_api_osc_secnum_fr1 osc_secnum_fr1
+    alias_method :apps_api_osc_secnum_fr1, :osc_secnum_fr1
 
     def db_api_osc_fr1
       @db_api_osc_fr1 ||= RegionalDatabase.new(