diff --git a/skills/leon/birthday/README.md b/skills/leon/birthday/README.md
deleted file mode 100644
index e69de29bb..000000000
diff --git a/skills/leon/birthday/memory/.gitkeep b/skills/leon/birthday/memory/.gitkeep
deleted file mode 100644
index e69de29bb..000000000
diff --git a/skills/leon/birthday/nlu/en.json b/skills/leon/birthday/nlu/en.json
deleted file mode 100644
index 74e66ca6d..000000000
--- a/skills/leon/birthday/nlu/en.json
+++ /dev/null
@@ -1,77 +0,0 @@
-{
-  "actions": {
-    "leon_birthday": {
-      "type": "dialog",
-      "utterance_samples": [
-        "What's your birth date?",
-        "How old are you?",
-        "When are you born?",
-        "May I know when is your birthday?"
-      ],
-      "answers": [
-        "I'm born in February 2019.",
-        "My first version has been released in February 2019."
-      ]
-    },
-    "when_my_birthday": {
-      "type": "logic",
-      "utterance_samples": [
-        "Do you know when is my birthday?",
-        "Do you remember when I am born?",
-        "Do you know my birth date?",
-        "Give me my birth date"
-      ]
-    },
-    "when_birthday": {
-      "type": "logic",
-      "utterance_samples": [
-        "When is Phoebe's birthday?"
-      ],
-      "entities": [
-        {
-          "type": "trim",
-          "name": "person",
-          "conditions": [
-            {
-              "type": "between",
-              "from": ["when"],
-              "to": ["am","was"]
-            }
-          ]
-        }
-      ],
-      "answers": {
-        "birthday_found": [
-          "%person%'s birthday is the %birthday%",
-          "%person% is born the %birth_date%"
-        ],
-        "birthday_not_found": [
-          "I'm not sure to remember, would you please tell me what is %person%'s birth date?",
-          "I do not know, please share %person% birth date."
-        ],
-        "birthday_understood": [
-          "Gotcha, %person%'s birth date is the %birth_date%.",
-          "Well noted, %person% is born the %birth_date%.",
-          "Understood! %person%'s birthday is the %birthday%."
-        ]
-      }
-    },
-    "my_birthday": {
-      "type": "dialog",
-      "utterance_samples": [
-        "My birthday is the 6th of August",
-        "I am born the 25th of March 1992",
-        "My birth date is the 26th of June in 1998",
-        "Note that my birthday is in April 12",
-        "The 30th May 1968 is my birth date"
-      ],
-      "answers": {
-        "birthday_understood": [
-          "Gotcha, your birth date is the %birth_date%.",
-          "Well noted, you are born the %birth_date%.",
-          "Understood! Your birthday is the %birthday%."
-        ]
-      }
-    }
-  }
-}
diff --git a/skills/leon/birthday/skill.json b/skills/leon/birthday/skill.json
deleted file mode 100644
index 4390d3208..000000000
--- a/skills/leon/birthday/skill.json
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@@ -1,11 +0,0 @@
-{
-  "name": "Birthday",
-  "bridge": null,
-  "version": "1.0.0",
-  "description": "Leon remembers birthdays and talk about his.",
-  "author": {
-    "name": "Louis Grenard",
-    "email": "louis.grenard@gmail.com",
-    "url": "https://github.com/louistiti"
-  }
-}
diff --git a/skills/leon/birthday/test/.gitkeep b/skills/leon/birthday/test/.gitkeep
deleted file mode 100644
index e69de29bb..000000000