diff --git a/scripts/west_commands/zcmake.py b/scripts/west_commands/zcmake.py
index afc1366c911..a05e21fa6f0 100644
--- a/scripts/west_commands/zcmake.py
+++ b/scripts/west_commands/zcmake.py
@@ -183,7 +183,7 @@ class CMakeCacheEntry:
             except ValueError as exc:
                 args = exc.args + ('on line {}: {}'.format(line_no, line),)
                 raise ValueError(args) from exc
-        elif type_ == 'STRING' or type_ == 'INTERNAL':
+        elif type_ in {'STRING', 'INTERNAL'}:
             # If the value is a CMake list (i.e. is a string which
             # contains a ';'), convert to a Python list.
             if ';' in value: