diff --git a/.github/workflows/blank.yml b/.github/workflows/blank.yml
index 5144f37a3..19f5a3610 100644
--- a/.github/workflows/blank.yml
+++ b/.github/workflows/blank.yml
@@ -58,9 +58,8 @@ jobs:
       - run: opam exec -- dune b
       - run: opam exec -- dune    install --profile=release
       - run: opam exec -- dune test stdlib/regression
+      - run: opam exec -- dune test regression
       - run: opam exec -- dune test regression_long
-      - run: opam exec -- make regression-all
-
 
       # works
       # - run: rm -fr runtime32
diff --git a/tutorial/dune b/tutorial/dune
index 9da618d90..2e0df6f9c 100644
--- a/tutorial/dune
+++ b/tutorial/dune
@@ -1,7 +1,8 @@
 
 (rule
  (targets Expressions.x32.exe)
- (enabled_if (= %{ocaml-config:os_type} "linux"))
+;  (enabled_if (= %{ocaml-config:os_type} "linux"))
+ (enabled_if (= %{system} "linux"))
  (deps (:lama Expressions.lama) ../runtime32/runtime.a ../stdlib/x32/Fun.i)
  (mode
   (promote (until-clean)))
@@ -43,7 +44,8 @@
 
 (rule
  (targets Functions.x32.exe)
- (enabled_if (= %{ocaml-config:os_type} "linux"))
+;  (enabled_if (= %{ocaml-config:os_type} "linux"))
+ (enabled_if (= %{system} "linux"))
  (deps (:lama Functions.lama) ../runtime32/runtime.a ../stdlib/x32/Fun.i)
  (mode
   (promote (until-clean)))
@@ -85,7 +87,8 @@
 
 (rule
  (targets Hello.x32.exe)
- (enabled_if (= %{ocaml-config:os_type} "linux"))
+;  (enabled_if (= %{ocaml-config:os_type} "linux"))
+ (enabled_if (= %{system} "linux"))
  (deps (:lama Hello.lama) ../runtime32/runtime.a ../stdlib/x32/Fun.i)
  (mode
   (promote (until-clean)))
@@ -127,7 +130,8 @@
 
 (rule
  (targets PatternMatching.x32.exe)
- (enabled_if (= %{ocaml-config:os_type} "linux"))
+;  (enabled_if (= %{ocaml-config:os_type} "linux"))
+ (enabled_if (= %{system} "linux"))
  (deps (:lama PatternMatching.lama) ../runtime32/runtime.a ../stdlib/x32/Fun.i)
  (mode
   (promote (until-clean)))
@@ -169,7 +173,8 @@
 
 (rule
  (targets Values.x32.exe)
- (enabled_if (= %{ocaml-config:os_type} "linux"))
+;  (enabled_if (= %{ocaml-config:os_type} "linux"))
+ (enabled_if (= %{system} "linux"))
  (deps (:lama Values.lama) ../runtime32/runtime.a ../stdlib/x32/Fun.i)
  (mode
   (promote (until-clean)))