diff --git a/pex/resolver.py b/pex/resolver.py
index 8ece618e8..c86759208 100644
--- a/pex/resolver.py
+++ b/pex/resolver.py
@@ -186,7 +186,7 @@ def expand_platform():
 To match given interpreter {given_interpreter!r}.
 
 Calculated platform: {calculated_platform!r}""".format(
-        given_platform=given_platform,
+        given_platform=platform,
         current_platform=cur_plat,
         current_interpreter=PythonInterpreter.get(),
         given_interpreter=interpreter,