diff --git a/firmware/config/boards/proteus/compile_proteus_f7.sh b/firmware/config/boards/proteus/compile_proteus_f7.sh
index 3377d2ce71..a44e2e724c 100755
--- a/firmware/config/boards/proteus/compile_proteus_f7.sh
+++ b/firmware/config/boards/proteus/compile_proteus_f7.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
-export USE_OPENBLT=yes
+# does not fit into 512K flash, and we use 512K because of st DFU client bug :(
+# export USE_OPENBLT=yes
 
 bash ../common_make.sh proteus ARCH_STM32F7