diff --git a/core-buffer/include/formats.hpp b/core-buffer/include/formats.hpp
index 14d769c..aa7adfe 100644
--- a/core-buffer/include/formats.hpp
+++ b/core-buffer/include/formats.hpp
@@ -6,23 +6,13 @@
 
 struct ImageMetadataBuffer
 {
-    uint64_t pulse_id[core_buffer::REPLAY_READ_BUFFER_SIZE];
-    uint64_t frame_index[core_buffer::REPLAY_READ_BUFFER_SIZE];
-    uint32_t daq_rec[core_buffer::REPLAY_READ_BUFFER_SIZE];
-    uint8_t is_good_frame[core_buffer::REPLAY_READ_BUFFER_SIZE];
-    uint64_t data_n_bytes[core_buffer::REPLAY_READ_BUFFER_SIZE];
+    uint64_t pulse_id[core_buffer::WRITER_DATA_CACHE_N_IMAGES];
+    uint64_t frame_index[core_buffer::WRITER_DATA_CACHE_N_IMAGES];
+    uint32_t daq_rec[core_buffer::WRITER_DATA_CACHE_N_IMAGES];
+    uint8_t is_good_frame[core_buffer::WRITER_DATA_CACHE_N_IMAGES];
     uint16_t n_images;
 };
 
-struct ImageMetadata
-{
-    uint64_t pulse_id;
-    uint64_t frame_index;
-    uint32_t daq_rec;
-    uint8_t is_good_frame;
-    uint64_t data_n_bytes;
-};
-
 #pragma pack(push)
 #pragma pack(1)
 struct ReplayModuleFrameBuffer {