diff --git a/scripts/west_commands/sdk.py b/scripts/west_commands/sdk.py
index 149b3bb9be302..e9a57942d5108 100755
--- a/scripts/west_commands/sdk.py
+++ b/scripts/west_commands/sdk.py
@@ -210,10 +210,11 @@ def detect_version(self, args):
         if args.version:
             version = args.version
         else:
-            if os.environ["ZEPHYR_BASE"]:
-                zephyr_base = Path(os.environ["ZEPHYR_BASE"])
+            zephyr_base_env = os.environ.get("ZEPHYR_BASE")
+            if zephyr_base_env:
+                zephyr_base = Path(zephyr_base_env)
             else:
-                zephyr_base = Path(__file__).parents[2]
+                zephyr_base = Path(__file__).resolve().parents[2]
 
             sdk_version_file = zephyr_base / "SDK_VERSION"