diff --git a/lib/python/pyflyby/_dynimp.py b/lib/python/pyflyby/_dynimp.py
index 69282a9c..1289358a 100644
--- a/lib/python/pyflyby/_dynimp.py
+++ b/lib/python/pyflyby/_dynimp.py
@@ -49,6 +49,7 @@
 
 module_dict = {}
 
+PYFLYBY_LAZY_LOAD_PREFIX = "from pyflyby_autoimport_"
 
 def add_import(names: str, code: str, *, strict: bool = True):
     """
@@ -110,8 +111,8 @@ def _add_import(ip, names: str, code: str) -> None:
     private version of add_import
     """
     assert ip is not None
-    mang = "pyflyby_autoimport_" + names.replace(",", "_").replace(" ", "_")
-    a: FrozenSet[Import] = ImportSet(f"from {mang} import {names}")._importset
+    mang = PYFLYBY_LAZY_LOAD_PREFIX + names.replace(",", "_").replace(" ", "_")
+    a: FrozenSet[Import] = ImportSet(f"{mang} import {names}")._importset
     b: FrozenSet[Import] = ip._auto_importer.db.known_imports._importset
     s_import: FrozenSet[Import] = a | b
 
diff --git a/lib/python/pyflyby/_interactive.py b/lib/python/pyflyby/_interactive.py
index a6318120..ea11ecdc 100644
--- a/lib/python/pyflyby/_interactive.py
+++ b/lib/python/pyflyby/_interactive.py
@@ -22,7 +22,8 @@
                                         auto_import,
                                         clear_failed_imports_cache,
                                         load_symbol)
-from   pyflyby._dynimp          import inject as inject_dynamic_import
+from   pyflyby._dynimp          import (inject as inject_dynamic_import, 
+                                        PYFLYBY_LAZY_LOAD_PREFIX)
 from   pyflyby._comms           import (initialize_comms, remove_comms,
                                         send_comm_message, MISSING_IMPORTS)
 from   pyflyby._file            import Filename, atomic_write_file, read_file
@@ -35,9 +36,6 @@
                                         FunctionWithGlobals, NullCtx, advise,
                                         indent)
 
-
-PYFLYBY_LAZY_LOAD_PREFIX = "from pyflyby_autoimport_"
-
 if False:
     __original__ = None # for pyflakes