diff --git a/src/rez/system.py b/src/rez/system.py
index 8486a71af..2fac207d7 100644
--- a/src/rez/system.py
+++ b/src/rez/system.py
@@ -207,6 +207,9 @@ def rez_bin_path(self):
         #
         import rez
         module_path = rez.__path__[0]
+        # Best effort attempt at converting slashes to the current
+        # platform native slash. (for example, forward to backward).
+        module_path = os.path.normpath(module_path)
 
         parts = module_path.split(os.path.sep)
         parts_lower = module_path.lower().split(os.path.sep)