diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index 2dcba04ec..c4cb7c391 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -420,7 +420,7 @@ protected:
 	int queueRequestDevice(Camera *camera, Request *request) override;
 
 private:
-	static constexpr unsigned int kNumInternalBuffers = 3;
+	static constexpr unsigned int kNumInternalBuffers = 4;
 
 	struct EntityData {
 		std::unique_ptr<V4L2VideoDevice> video;