diff --git a/pflogsumm-1.1.5/pflogsumm.pl b/pflogsumm-1.1.5/pflogsumm.pl

index eb527d0..7e26206 100755

--- a/pflogsumm-1.1.5/pflogsumm.pl

+++ b/pflogsumm-1.1.5/pflogsumm.pl

@@ -503,7 +503,12 @@ $usageMsg =

 # Accept either "_"s or "-"s in --switches

 foreach (@ARGV) {

     last if($_ eq "--");

-    tr/_/-/ if(/^--\w/);

+    if (/^--\w/)

+    {

+        my @argspl = split("=", $_, 2);

+        $argspl[0] =~ tr/_/-/;

+        $_ = join("=", @argspl);

+    }

 }

 # Some pre-inits for convenience