diff --git a/lib/checksrc.pl b/lib/checksrc.pl
index 834364561..e1bb1a633 100755
--- a/lib/checksrc.pl
+++ b/lib/checksrc.pl
@@ -36,7 +36,7 @@ my $file;
 my $dir=".";
 my $wlist="";
 my @alist;
-my $windows_os = $^O eq 'MSWin32' || $^O eq 'msys' || $^O eq 'cygwin';
+my $windows_os = $^O eq 'MSWin32' || $^O eq 'cygwin' || $^O eq 'msys';
 my $verbose;
 my %whitelist;
 
diff --git a/tests/testcurl.pl b/tests/testcurl.pl
index 69722fb36..fce53571a 100755
--- a/tests/testcurl.pl
+++ b/tests/testcurl.pl
@@ -173,7 +173,7 @@ if ($^O eq 'MSWin32' || $targetos) {
   }
 }
 
-if (($^O eq 'MSWin32' || $^O eq 'msys') &&
+if (($^O eq 'MSWin32' || $^O eq 'cygwin' || $^O eq 'msys') &&
     ($targetos =~ /vc/ || $targetos =~ /mingw32/ ||
      $targetos =~ /borland/ || $targetos =~ /watcom/)) {