diff --git a/core/platform_compat.py b/core/platform_compat.py
index 1a927702b..efa496ac6 100644
--- a/core/platform_compat.py
+++ b/core/platform_compat.py
@@ -300,7 +300,7 @@ def is_wsl() -> bool:
     import sys
     if sys.platform.startswith("linux") or os.name == "posix":
         try:
-            with open("/proc/version", "r") as f:
+            with open("/proc/version", "r", encoding="utf-8", errors="ignore") as f:
                 if "microsoft" in f.read().lower():
                     return True
         except Exception:
diff --git a/tests/test_platform_compat.py b/tests/test_platform_compat.py
index 2d8c211c0..d3e42b5ae 100644
--- a/tests/test_platform_compat.py
+++ b/tests/test_platform_compat.py
@@ -83,6 +83,7 @@ def test_is_wsl_true_when_proc_version_mentions_microsoft(monkeypatch):
     def fake_open(path, mode="r", *args, **kwargs):
         assert path == "/proc/version"
         assert mode == "r"
+        assert kwargs == {"encoding": "utf-8", "errors": "ignore"}
         return io.StringIO("Linux version 6.6.0 microsoft standard")
 
     monkeypatch.setattr("builtins.open", fake_open)