diff --git a/roles/debug_env/templates/dumpall.j2 b/roles/debug_env/templates/dumpall.j2
index 470394828c..bff58d864a 100644
--- a/roles/debug_env/templates/dumpall.j2
+++ b/roles/debug_env/templates/dumpall.j2
@@ -1,19 +1,19 @@
 Module Variables ("vars"):
 --------------------------------
-{{ vars | to_nice_json }}
+{{ vars | to_nice_yaml }}
 
 Environment Variables ("environment"):
 --------------------------------
-{{ environment | to_nice_json }}
+{{ environment | to_nice_yaml }}
 
 GROUP NAMES Variables ("group_names"):
 --------------------------------
-{{ group_names | to_nice_json }}
+{{ group_names | to_nice_yaml }}
 
 GROUPS Variables ("groups"):
 --------------------------------
-{{ groups | to_nice_json }}
+{{ groups | to_nice_yaml }}
 
 HOST Variables ("hostvars"):
 --------------------------------
-{{ hostvars | to_nice_json }}
+{{ hostvars | to_nice_yaml }}