diff --git a/nim.cfg b/nim.cfg
new file mode 100644
index 000000000..801d883a5
--- /dev/null
+++ b/nim.cfg
@@ -0,0 +1 @@
+# --experimental:ForLoopMacros # Deactivated for CI - https://github.com/status-im/nimbus/pull/110#issuecomment-414326444
diff --git a/nimbus.nimble b/nimbus.nimble
index 9969d163a..e9e64d72f 100644
--- a/nimbus.nimble
+++ b/nimbus.nimble
@@ -29,6 +29,7 @@ proc test(name: string, lang = "c") =
   --run
   --nimcache: "nimcache"
   switch("out", ("./build/" & name))
+  switch("experimental", "ForLoopMacros")
   setCommand lang, "tests/" & name & ".nim"
 
 task test, "Run tests":