diff --git a/backends/platform/psp/thread.h b/backends/platform/psp/thread.h
index 5879d044ed7..d395d6713e1 100644
--- a/backends/platform/psp/thread.h
+++ b/backends/platform/psp/thread.h
@@ -36,8 +36,8 @@ enum ThreadPriority {
 
 enum StackSizes {
 	STACK_AUDIO_THREAD = 16 * 1024,
-	STACK_TIMER_THREAD = 4 * 1024,
-	STACK_DISPLAY_THREAD = 4 * 1024,
+	STACK_TIMER_THREAD = 16 * 1024,
+	STACK_DISPLAY_THREAD = 2 * 1024,
 	STACK_POWER_THREAD = 4 * 1024
 };