diff --git a/reframe/utility/__init__.py b/reframe/utility/__init__.py
index cb048c5e19..96f0140ddb 100644
--- a/reframe/utility/__init__.py
+++ b/reframe/utility/__init__.py
@@ -630,8 +630,8 @@ def _is_valid_for_env(m, e):
         if environ_mapping is None:
             return True
 
-        for patt, environs in environ_mapping.items():
-            if re.match(patt, m) and e in environs:
+        for patt, env in environ_mapping.items():
+            if re.match(patt, m) and e == env:
                 return True
 
         return False