diff --git a/appveyor.yml b/appveyor.yml
index aad6ffabbb..e3944d96ed 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -94,7 +94,7 @@ for:
     - nmake -l "TESTOPTS=-v -q" btest
     - nmake -l "TESTOPTS=-v -q" test-basic
     - nmake -l "TESTOPTS=-q --subprocess-timeout-scale=3.0 --excludes=../test/excludes/_appveyor -j%JOBS% --exclude win32ole --exclude test_syntax --exclude test_open-uri --exclude test_bundled_ca" test-all
-    # separately execute tests that may crash worker without -j.
+    # separately execute tests without -j which may crash worker with -j.
     - nmake -l "TESTOPTS=-v --subprocess-timeout-scale=3.0 --excludes=../test/excludes/_appveyor" test-all TESTS="../test/win32ole ../test/ruby/test_syntax.rb ../test/open-uri/test_open-uri.rb ../test/rubygems/test_bundled_ca.rb"
     - nmake -l test-spec MSPECOPT=-fs # not using `-j` because sometimes `mspec -j` silently dies on Windows
 -
@@ -137,6 +137,6 @@ for:
   test_script:
     - mingw32-make test
     - mingw32-make test-all TESTOPTS="--retry --job-status=normal --show-skip --subprocess-timeout-scale=1.5 --excludes=../ruby/test/excludes/_appveyor -j %JOBS% --exclude win32ole --exclude test_open-uri"
-    # separately execute tests that may crash worker without -j.
+    # separately execute tests without -j which may crash worker with -j.
     - mingw32-make test-all TESTOPTS="--retry --job-status=normal --show-skip --subprocess-timeout-scale=1.5 --excludes=../ruby/test/excludes/_appveyor" TESTS="../ruby/test/win32ole ../ruby/test/open-uri/test_open-uri.rb"
     - mingw32-make test-spec MSPECOPT=-fs # not using `-j` because sometimes `mspec -j` silently dies on Windows