diff --git a/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.clj b/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.clj
index a4f8ac3..05ef6df 100644
--- a/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.clj
+++ b/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.clj
@@ -19,19 +19,23 @@
                          ; Link Types
                           "Mention"})
 
+(defn match-type 
+  [type]
+  #(= (:type %) type))
+
 (s/def ::Object (s/or
                  :uri core/uri-string?
                  :map (s/and (s/keys
                               :req-un [::id ::type]
                               :opt-un [::attributedTo ::und-mehr])
-                             #(not (= (:type %) "Link")))))
+                             #(not (match-type "Link")))))
 (s/def ::id core/uri-string?)
 (s/def ::type #(or (core/uri-string? %) (contains? objectAndLinkTypes %)))
 
 (s/def ::Link (s/and (s/keys
                       :req-un [::type]
                       :opt-un [::attributedTo ::und-mehr])
-                     #(= (:type %) "Link")))
+                     (match-type "Link")))
 
 (s/def ::Relationship (s/keys :req-un [::object ::und-mehr]))
 
@@ -51,7 +55,6 @@
 (s/def ::attributedTo ::Property)
 (s/def ::actor ::attributedTo)
 
-
 (s/def ::object
   ::Property)
 
@@ -69,11 +72,9 @@
 
 (s/def ::verb core/uri-string?)
 
-
-
-
 ; #### LIKE ####
-(s/def ::Like ::Activity)
+(s/def ::Like (s/and ::Activity
+                     (match-type "Like")))
 
 ; Was beim Type Activity optional und required ist, ist abhängig vom Aktivitätstyp.
 ; Bspw brauch ein Like einen actor und den type "Like" und (xor) target/object.