diff --git a/src/rez/serialise.py b/src/rez/serialise.py
index dac33a38d..f292178d2 100644
--- a/src/rez/serialise.py
+++ b/src/rez/serialise.py
@@ -330,6 +330,7 @@ def _process(value):
 
                 # apply globals
                 fn.__globals__["this"] = EarlyThis(data)
+                fn.__globals__["__file__"] = filepath
                 fn.__globals__.update(get_objects())
 
                 # execute the function