diff --git a/libretroshare/src/services/p3idservice.cc b/libretroshare/src/services/p3idservice.cc
index b09f2b883..dc2d53cb3 100644
--- a/libretroshare/src/services/p3idservice.cc
+++ b/libretroshare/src/services/p3idservice.cc
@@ -810,9 +810,15 @@ bool p3IdService::getOwnIds(std::list<RsGxsId> &ownIds,bool signed_only)
     return true ;
 }
 
+bool p3IdService::isKnownId(const RsGxsId& id)
+{
+	RS_STACK_MUTEX(mIdMtx);
+	return mKeyCache.is_cached(id) ||
+	        std::find(mOwnIds.begin(), mOwnIds.end(),id) != mOwnIds.end();
+}
 
 bool p3IdService::identityToBase64( const RsGxsId& id,
-                       std::string& base64String )
+                                    std::string& base64String )
 { return serialiseIdentityToMemory(id, base64String); }
 
 bool p3IdService::serialiseIdentityToMemory( const RsGxsId& id,
diff --git a/libretroshare/src/services/p3idservice.h b/libretroshare/src/services/p3idservice.h
index 64e335ef5..0b8f433b6 100644
--- a/libretroshare/src/services/p3idservice.h
+++ b/libretroshare/src/services/p3idservice.h
@@ -293,12 +293,10 @@ public:
 	/// @see RsIdentity
 	bool getOwnPseudonimousIds(std::vector<RsGxsId>& ids) override;
 
-	virtual bool getOwnIds(std::list<RsGxsId> &ownIds, bool signed_only = false);
+	bool getOwnIds(
+	        std::list<RsGxsId> &ownIds, bool signed_only = false ) override;
 
-	//virtual bool getPublicKey(const RsGxsId &id, RsTlvSecurityKey &key) ;
-	//virtual void networkRequestPublicKey(const RsGxsId& key_id,const std::list<RsPeerId>& peer_ids) ;
-
-	inline bool isKnownId(const RsGxsId& id) override { return haveKey(id); }
+	bool isKnownId(const RsGxsId& id) override;
 
 	bool isOwnId(const RsGxsId& key_id) override;