diff --git a/salt/modules/yumpkg.py b/salt/modules/yumpkg.py
index <HASH>..<HASH> 100644
--- a/salt/modules/yumpkg.py
+++ b/salt/modules/yumpkg.py
@@ -2597,9 +2597,9 @@ def group_install(name,
     targets = []
     for group in groups:
         group_detail = group_info(group)
-        targets.extend(group_detail.get('mandatory packages', []))
+        targets.extend(group_detail.get('mandatory', []))
         targets.extend(
-            [pkg for pkg in group_detail.get('default packages', [])
+            [pkg for pkg in group_detail.get('default', [])
              if pkg not in skip]
         )
     if include:
Use correct keys from group_info in group_install.

Fixes #<I>