diff --git a/.github/workflows/build-clang-doxy.yml b/.github/workflows/build-clang-doxy.yml
index 9bee40ef7..e6acd4ff0 100644
--- a/.github/workflows/build-clang-doxy.yml
+++ b/.github/workflows/build-clang-doxy.yml
@@ -337,10 +337,10 @@ jobs:
           echo ${{ steps.get_board_json.outputs.boardJson }}
           echo ${{ fromJson(steps.get_board_json.outputs.boardJson) }}
           python3 -m esptool --chip ${{fromJson(steps.get_board_json.outputs.boardJson).esptool.chip}} merge_bin \
-            --flash_mode ${{fromJson(steps.get_board_json.outputs.boardJson).esptool.flashMode}} \
-            --flash_freq ${{fromJson(steps.get_board_json.outputs.boardJson).esptool.flashFreq}} \
-            --flash_size ${{fromJson(steps.get_board_json.outputs.boardJson).esptool.flashSize}} \
-            --fill-flash-size ${{fromJson(steps.get_board_json.outputs.boardJson).esptool.flashSize}} \
+            --flash_mode keep \
+            --flash_freq keep \
+            --flash_size keep \
+            --fill-flash-size 4MB \
             -o wippersnapper.${{ matrix.arduino-platform }}.littlefs.${{ env.WS_VERSION }}.combined.bin \
             ${{ matrix.offset }} wippersnapper.${{ matrix.arduino-platform }}.littlefs.${{ env.WS_VERSION }}.bootloader.bin \
             0x8000 wippersnapper.${{ matrix.arduino-platform }}.littlefs.${{ env.WS_VERSION }}.partitions.bin \