diff --git a/regression-tests/15-compile-arm-apcs-ports/Makefile b/regression-tests/15-compile-arm-apcs-ports/Makefile
index 61873d531..1ae39b62a 100644
--- a/regression-tests/15-compile-arm-apcs-ports/Makefile
+++ b/regression-tests/15-compile-arm-apcs-ports/Makefile
@@ -3,7 +3,7 @@ TOOLSDIR=../../tools
 
 EXAMPLES = \
 hello-world/econotag \
-hello-world/mbxxx \
+hello-world/mbxxx:STM32W_CPUREV=CC \
 ipv6/rpl-border-router/econotag \
 er-rest-example/econotag \
 webserver-ipv6/econotag \
diff --git a/regression-tests/Makefile.compile-test b/regression-tests/Makefile.compile-test
index bbf6396d3..2f596aa27 100644
--- a/regression-tests/Makefile.compile-test
+++ b/regression-tests/Makefile.compile-test
@@ -42,7 +42,6 @@ get_target_vars = $(wordlist 2,15,$(subst :, ,$1))
 define dooneexample
 @echo Building example $(3): $(1) for target $(2)
 @((cd $(EXAMPLESDIR)/$(1); \
- export STM32W_CPUREV=CC; \
  make $(4) TARGET=$(2) clean && make $(4) TARGET=$(2) WERROR=1) > \
       $(3)-$(subst /,-,$(1))$(2).report 2>&1 && \
  (echo $(1) $(2): OK | tee $(3)-$(subst /,-,$(1))$(2).summary) || \