diff --git a/docs/solo/building.md b/docs/solo/building.md
index e3f74d0..6da8360 100644
--- a/docs/solo/building.md
+++ b/docs/solo/building.md
@@ -24,12 +24,6 @@ Enter the `stm32l4xx` target directory.
 cd targets/stm32l432
 ```
 
-Build the cbor library.
-
-```bash
-make cbor
-```
-
 Now build Solo.
 
 ```
diff --git a/targets/stm32l432/Makefile b/targets/stm32l432/Makefile
index 8daf962..7de8c2d 100644
--- a/targets/stm32l432/Makefile
+++ b/targets/stm32l432/Makefile
@@ -30,14 +30,14 @@ boot-sig-checking:
 boot-no-sig:
 	$(MAKE) -f $(BOOTMAKE) -j8 bootloader.hex PREFIX=$(PREFIX) EXTRA_DEFINES='-DSOLO_HACKER' DEBUG=0
 
-build-release-locked: clean2 boot-sig-checking clean all-locked
+build-release-locked: cbor clean2 boot-sig-checking clean all-locked
 	$(merge_hex) solo.hex bootloader.hex all.hex
 	rm -f solo.hex bootloader.hex  # don't program solo.hex ...
 
-build-release: clean2 boot-sig-checking clean all
+build-release: cbor clean2 boot-sig-checking clean all
 	$(merge_hex) solo.hex bootloader.hex all.hex
 
-build-hacker: clean2 boot-no-sig clean all-hacker
+build-hacker: cbor clean2 boot-no-sig clean all-hacker
 	$(merge_hex) solo.hex bootloader.hex all.hex
 
 build-debugboot: clean2 debugboot-boot clean debugboot-app
@@ -81,7 +81,6 @@ cbor:
 	$(MAKE) -f application.mk -j8 cbor
 
 test:
-	$(MAKE) cbor
 	$(VENV) $(MAKE) build-release-locked
 	$(VENV) $(MAKE) build-release
 	$(VENV) $(MAKE) build-hacker