diff --git a/internal/http/services/owncloud/ocs/config/config.go b/internal/http/services/owncloud/ocs/config/config.go
index 20d785c011..266c5308f6 100644
--- a/internal/http/services/owncloud/ocs/config/config.go
+++ b/internal/http/services/owncloud/ocs/config/config.go
@@ -38,6 +38,7 @@ type Config struct {
 	CacheWarmupDrivers      map[string]map[string]interface{} `mapstructure:"cache_warmup_drivers"`
 	ResourceInfoCacheSize   int                               `mapstructure:"resource_info_cache_size"`
 	ResourceInfoCacheTTL    int                               `mapstructure:"resource_info_cache_ttl"`
+	UserIdentifierCacheTTL  int                               `mapstructure:"user_identifier_cache_ttl"`
 }
 
 // Init sets sane defaults
@@ -66,5 +67,9 @@ func (c *Config) Init() {
 		c.ResourceInfoCacheSize = 1000000
 	}
 
+	if c.UserIdentifierCacheTTL == 0 {
+		c.UserIdentifierCacheTTL = 60
+	}
+
 	c.GatewaySvc = sharedconf.GetGatewaySVC(c.GatewaySvc)
 }
diff --git a/internal/http/services/owncloud/ocs/handlers/apps/sharing/shares/shares.go b/internal/http/services/owncloud/ocs/handlers/apps/sharing/shares/shares.go
index 73167f35e8..39d664efea 100644
--- a/internal/http/services/owncloud/ocs/handlers/apps/sharing/shares/shares.go
+++ b/internal/http/services/owncloud/ocs/handlers/apps/sharing/shares/shares.go
@@ -70,6 +70,7 @@ type Handler struct {
 	homeNamespace          string
 	additionalInfoTemplate *template.Template
 	userIdentifierCache    *ttlcache.Cache
+	userIdentifierCacheTTL time.Duration
 	resourceInfoCache      gcache.Cache
 	resourceInfoCacheTTL   time.Duration
 }
@@ -100,7 +101,7 @@ func (h *Handler) Init(c *config.Config) {
 	h.additionalInfoTemplate, _ = template.New("additionalInfo").Parse(c.AdditionalInfoAttribute)
 
 	h.userIdentifierCache = ttlcache.NewCache()
-	_ = h.userIdentifierCache.SetTTL(24 * time.Hour)
+	_ = h.userIdentifierCache.SetTTL(time.Second * time.Duration(c.UserIdentifierCacheTTL))
 
 	if h.resourceInfoCacheTTL > 0 {
 		cwm, err := getCacheWarmupManager(c)