diff --git a/Makefile b/Makefile
index d3702ac327..1c658da303 100644
--- a/Makefile
+++ b/Makefile
@@ -35,9 +35,8 @@ $(BUILD)/kernel.all: $(LD_SCRIPT) $(LOCKFILE) $(MANIFEST) $(TARGET_SPEC) $(shell
 		--bin kernel \
 		--manifest-path "$(MANIFEST)" \
 		--target "$(TARGET_SPEC)" \
-		\
 		--release \
-		-Z build-std=core,alloc -Zbuild-std-features=compiler-builtins-mem \
+		-Z build-std=core,alloc -Zbuild-std-features=compiler-builtins-mem -Z json-target-spec \
 		--features=$(KERNEL_CARGO_FEATURES) \
 		-- \
 		-C link-arg=-T -Clink-arg="$(LD_SCRIPT)" \
@@ -63,6 +62,5 @@ check:
 		--bin kernel \
 		--manifest-path "$(MANIFEST)" \
 		--target "$(TARGET_SPEC)" \
-		\
-		-Z build-std=core,alloc -Zbuild-std-features=compiler-builtins-mem \
+		-Z build-std=core,alloc -Zbuild-std-features=compiler-builtins-mem -Z json-target-spec \
 		--features=$(KERNEL_CHECK_FEATURES)