diff --git a/firmware/clean_compile_two_versions.bat b/firmware/clean_compile_two_versions.bat
index 83dfc9ce33..03e6aeeae9 100644
--- a/firmware/clean_compile_two_versions.bat
+++ b/firmware/clean_compile_two_versions.bat
@@ -8,18 +8,20 @@ make -j4 DEBUG_LEVEL_OPT='-O2'  EXTRA_PARAMS='-DEFI_ENABLE_ASSERTS=FALSE -DCH_DB
 
 rem mv build\rusefi.elf deliver\rusefi_no_asserts.elf
 mv build\rusefi.bin deliver\rusefi_no_asserts.bin
-rem mv build\rusefi.hex deliver\rusefi_no_asserts.hex
+rem this file is needed for DFU generation
+mv build\rusefi.hex deliver\rusefi_no_asserts.hex
 echo Release compilation results 1/2
 echo "TIMESTAMP %date% %time%"
 ls -l build
-if not exist deliver/rusefi_no_asserts.bin echo FAILED to compile NO ASSERTS version
-if not exist deliver/rusefi_no_asserts.bin exit -1
+if not exist deliver/rusefi_no_asserts.hex echo FAILED to compile NO ASSERTS version
+if not exist deliver/rusefi_no_asserts.hex exit -1
 
 call clean.bat
 echo "TIMESTAMP %date% %time%"
 make -j4 
 
 mv build\rusefi.elf deliver\rusefi.elf
+rem this file is needed for DFU generation
 mv build\rusefi.hex deliver\rusefi.hex
 rem Keeping file in place since hw_test.bat would take it from current location
 cp build\rusefi.bin deliver\rusefi.bin
diff --git a/misc/jenkins/build_working_folder.bat b/misc/jenkins/build_working_folder.bat
index 7ef8069d24..156d6894fd 100644
--- a/misc/jenkins/build_working_folder.bat
+++ b/misc/jenkins/build_working_folder.bat
@@ -15,7 +15,8 @@ cp firmware/svnversion.h %folder%
 cp -r misc/install/openocd %folder% 
 cp java_console/rusefi.xml %folder%
 rem 407 has additional version of firmware
-cp firmware/deliver/rusefi_no_asserts.* %folder%
+cp firmware/deliver/rusefi_no_asserts.bin %folder%
+cp firmware/deliver/rusefi_no_asserts.dfu %folder%
 rem 746 builds one version at the moment
 rem probably not needed cp firmware/build/rusefi.hex %folder%
 cp firmware/build/rusefi.bin %folder%