diff --git a/bin/curvecalc b/bin/curvecalc
--- a/bin/curvecalc
+++ b/bin/curvecalc
@@ -41,9 +41,9 @@ from light9.editchoicegtk import EditCho
 from light9.gtkpyconsole import togglePyConsole
 from light9.namespaces import L9
 from light9.observable import Observable
-from light9.rdfdb import clientsession
-from light9.rdfdb.patch import Patch
-from light9.rdfdb.syncedgraph import SyncedGraph
+from rdfdb import clientsession
+from rdfdb.patch import Patch
+from rdfdb.syncedgraph import SyncedGraph
 from light9.wavelength import wavelength
 
 class SubtermExists(ValueError):