diff --git a/litedram/phy/ecp5ddrphy.py b/litedram/phy/ecp5ddrphy.py
index e1fb44a..5c516c6 100644
--- a/litedram/phy/ecp5ddrphy.py
+++ b/litedram/phy/ecp5ddrphy.py
@@ -18,7 +18,7 @@ from migen import *
 from migen.fhdl.specials import Tristate
 from migen.genlib.cdc import MultiReg
 
-from litex.gen.genlib.misc import timeline, WaitTimer
+from litex.gen.genlib.misc import timeline
 
 from litex.soc.interconnect.csr import *
 
diff --git a/litedram/phy/gw2ddrphy.py b/litedram/phy/gw2ddrphy.py
index 4cdc897..edfda96 100644
--- a/litedram/phy/gw2ddrphy.py
+++ b/litedram/phy/gw2ddrphy.py
@@ -19,7 +19,7 @@ from migen import *
 from migen.fhdl.specials import Tristate
 from migen.genlib.cdc import MultiReg
 
-from litex.gen.genlib.misc import timeline, WaitTimer
+from litex.gen.genlib.misc import timeline
 
 from litex.soc.interconnect.csr import *