diff --git a/testmodules/nim.cfg b/testmodules/nim.cfg
deleted file mode 100644
index 222cb3d..0000000
--- a/testmodules/nim.cfg
+++ /dev/null
@@ -1,2 +0,0 @@
---warningAsError[UnsafeDefault]:"on"
---warningAsError[ProveInit]:"on"
diff --git a/testmodules/options/test.nimble b/testmodules/options/test.nimble
index d389ae1..1aa991e 100644
--- a/testmodules/options/test.nimble
+++ b/testmodules/options/test.nimble
@@ -4,4 +4,8 @@ description = "Questionable tests for std/option"
 license = "MIT"
 
 task test, "Runs the test suite":
-  exec "nim c -f -r test.nim"
+  var options = "-f -r"
+  when (NimMajor, NimMinor) >= (1, 4):
+    options &= " --warningAsError[UnsafeDefault]:on"
+    options &= " --warningAsError[ProveInit]:on"
+  exec "nim c " & options & " test.nim"