diff --git a/src/db/db/gsiDeclDbTrans.cc b/src/db/db/gsiDeclDbTrans.cc
index ed6296625..a6bfe92c7 100644
--- a/src/db/db/gsiDeclDbTrans.cc
+++ b/src/db/db/gsiDeclDbTrans.cc
@@ -219,7 +219,7 @@ struct trans_defs
       "\n"
       "@return The inverted transformation\n"
     ) +
-    method ("ctrans", &C::ctrans, arg ("d"),
+    method ("ctrans|*", &C::ctrans, arg ("d"),
       "@brief Transforms a distance\n"
       "\n"
       "The \"ctrans\" method transforms the given distance.\n"
@@ -229,6 +229,8 @@ struct trans_defs
       "\n"
       "@param d The distance to transform\n"
       "@return The transformed distance\n"
+      "\n"
+      "The product '*' has been added as a synonym in version 0.28."
     ) +
     method ("trans|*", (point_type (C::*) (const point_type &) const) &C::trans, arg ("p"),
       "@brief Transforms a point\n"
@@ -752,6 +754,8 @@ struct cplx_trans_defs
       "\n"
       "@param d The distance to transform\n"
       "@return The transformed distance\n"
+      "\n"
+      "The product '*' has been added as a synonym in version 0.28."
     ) +
     method ("trans|*", (target_point_type (C::*) (const point_type &) const) &C::trans, arg ("p"),
       "@brief Transforms a point\n"
diff --git a/testdata/ruby/dbTransTest.rb b/testdata/ruby/dbTransTest.rb
index f97d32096..6b8a96472 100644
--- a/testdata/ruby/dbTransTest.rb
+++ b/testdata/ruby/dbTransTest.rb
@@ -80,8 +80,8 @@ class DBTrans_TestClass < TestBase
     assert_equal( RBA::Trans::new(RBA::Trans::R180, RBA::DVector::new(5,-7)).to_s, "r180 5,-7" )
     assert_equal( RBA::Trans::new(RBA::Trans::R180).to_s, "r180 0,0" )
 
-    assert_equal( e.ctrans( 2.0 ).to_s, "2" )
-    assert_equal( (e * 2.0).to_s, "2" )
+    assert_equal( e.ctrans( 2.0 ), 2.0 )
+    assert_equal( e * 2.0, 2.0 )
     assert_equal( e.trans( RBA::Edge::new(0, 1, 2, 3) ).to_s, "(-3,-2;-1,0)" )
     assert_equal( ( e * RBA::Edge::new(0, 1, 2, 3) ).to_s, "(-3,-2;-1,0)" )
     assert_equal( e.trans( RBA::Box::new(0, 1, 2, 3) ).to_s, "(-3,-2;-1,0)" )