diff --git a/sw/ext/Makefile b/sw/ext/Makefile
index e53b4c40c5..c3934a7980 100644
--- a/sw/ext/Makefile
+++ b/sw/ext/Makefile
@@ -53,7 +53,7 @@ update_submodules:
 	fi
 
 libopencm3.module: update_submodules
-	$(Q)$(MAKE) -C libopencm3 lib PREFIX=$(PREFIX) TARGETS="stm32/f1 stm32/f2 stm32/f4"
+	$(Q)$(MAKE) -C libopencm3 lib PREFIX=$(PREFIX) TARGETS="stm32/f1 stm32/f4"
 
 luftboot.module: update_submodules libopencm3.module
 	$(Q)$(MAKE) -C luftboot/src all LIBOPENCM3=../../libopencm3 PREFIX=$(PREFIX)