diff --git a/scripts/west_commands/runners/core.py b/scripts/west_commands/runners/core.py
index 45e5730f714af6..d216dffcd18e60 100644
--- a/scripts/west_commands/runners/core.py
+++ b/scripts/west_commands/runners/core.py
@@ -777,7 +777,7 @@ def require(program: str, path: Optional[str] = None) -> str:
             raise MissingProgram(program)
         return ret
 
-    def get_rtt_address(self) -> int | None:
+    def get_rtt_address(self) -> Optional[int]:
         '''Helper method for extracting a the RTT control block address.
 
         If args.rtt_address was supplied, returns that.