diff --git a/spinnman/processes/get_machine_process.py b/spinnman/processes/get_machine_process.py
index aa97e7631..00b104300 100644
--- a/spinnman/processes/get_machine_process.py
+++ b/spinnman/processes/get_machine_process.py
@@ -119,7 +119,7 @@ def _make_chip(self, chip_info: ChipSummaryInfo, machine: Machine) -> Chip:
             (chip_info.x, chip_info.y), set())
         if 0 in down_cores:
             raise NotImplementedError(
-                f"Declaring scamp core (0) as down is not supported")
+                "Declaring scamp core (0) as down is not supported")
         cores = list()
         for i in range(1, n_cores):
             if i in down_cores: