diff --git a/compiler/bitcells/replica_bitcell.py b/compiler/bitcells/replica_bitcell.py
index bc233056..7ce9d433 100644
--- a/compiler/bitcells/replica_bitcell.py
+++ b/compiler/bitcells/replica_bitcell.py
@@ -8,6 +8,7 @@
 import debug
 import bitcell_base
 from tech import cell_properties as props
+from tech import parameter
 
 
 class replica_bitcell(bitcell_base.bitcell_base):
diff --git a/compiler/bitcells/replica_bitcell_1rw_1r.py b/compiler/bitcells/replica_bitcell_1rw_1r.py
index fd3ae27a..60e160c3 100644
--- a/compiler/bitcells/replica_bitcell_1rw_1r.py
+++ b/compiler/bitcells/replica_bitcell_1rw_1r.py
@@ -8,6 +8,7 @@
 import debug
 import bitcell_base
 from tech import cell_properties as props
+from tech import parameter
 
 
 class replica_bitcell_1rw_1r(bitcell_base.bitcell_base):