diff --git a/storage/memory.go b/storage/memory.go
index 41b4f86a3..b4ceceb12 100644
--- a/storage/memory.go
+++ b/storage/memory.go
@@ -160,6 +160,7 @@ func NewExampleStore() *MemoryStore {
 		AccessTokenRequestIDs:  map[string]string{},
 		RefreshTokenRequestIDs: map[string]string{},
 		IssuerPublicKeys:       map[string]IssuerPublicKeys{},
+		PARSessions:            map[string]fosite.AuthorizeRequester{},
 	}
 }