diff --git a/server/tests/federation/main_test.go b/server/tests/federation/main_test.go
index 8599a2a7a..f4b5ce6b3 100644
--- a/server/tests/federation/main_test.go
+++ b/server/tests/federation/main_test.go
@@ -55,6 +55,7 @@ func InitTestApp() {
 			service.DefaultStore = app.Store
 
 			eventbus.Set(eventBus)
+			app.Opt.Attachment.AvatarInitialsFontPath = "../../auth/assets/public/fonts/poppins/Poppins-Regular.ttf"
 			return nil
 		})
 
diff --git a/server/tests/workflows/main_test.go b/server/tests/workflows/main_test.go
index 3a2273fc8..f16be4d7c 100644
--- a/server/tests/workflows/main_test.go
+++ b/server/tests/workflows/main_test.go
@@ -71,6 +71,7 @@ func TestMain(m *testing.M) {
 		app.Opt.ActionLog.WorkflowFunctionsEnabled = true
 		defStore = app.Store
 		eventbus.Set(eventBus)
+		app.Opt.Attachment.AvatarInitialsFontPath = "../../auth/assets/public/fonts/poppins/Poppins-Regular.ttf"
 		return nil
 	})