diff --git a/litex/build/lattice/icestorm.py b/litex/build/lattice/icestorm.py
index 50a7df4ea..597e09003 100644
--- a/litex/build/lattice/icestorm.py
+++ b/litex/build/lattice/icestorm.py
@@ -100,7 +100,7 @@ class LatticeIceStormToolchain(YosysNextPNRToolchain):
         tool_options = {
             "icepack_options": ["-s"],
             "yosys_synth_options": self._synth_opts.split(' '),
-            "nextpnr_options": self._pnr_opts.split(' '),
+            "nextpnr_options": self.pnr_opts.split(' '),
         }
         return ("icestorm", {"tool_options": {"icestorm": tool_options}})