diff --git a/src/e3/os/platform.py b/src/e3/os/platform.py
index 840e80f9..2a5c05c2 100644
--- a/src/e3/os/platform.py
+++ b/src/e3/os/platform.py
@@ -97,7 +97,11 @@ def fetch_system_data(cls) -> None:
             try:
                 import psutil
 
-                cls.core_number = psutil.cpu_count()
+                tmp_core_number = psutil.cpu_count()
+                if not tmp_core_number:
+                    logger.error("psutil.cpu_count() returned None or 0")
+                else:
+                    cls.core_number = tmp_core_number
             except Exception:
                 logger.exception("psutil error")