1 files changed, 3 insertions, 6 deletions
diff --git a/Bugzilla/Constants.pm b/Bugzilla/Constants.pm
index 3aa7b0fa4..185a30390 100644
--- a/Bugzilla/Constants.pm
+++ b/Bugzilla/Constants.pm
@@ -15,6 +15,7 @@ use base qw(Exporter);
 
 # For bz_locations
 use File::Basename;
+use Cwd qw(realpath);
 use Memoize;
 
 @Bugzilla::Constants::EXPORT = qw(
@@ -644,12 +645,8 @@ sub _bz_locations {
     # directory under both mod_cgi and mod_perl. We call dirname twice
     # to get the name of the directory above the "Bugzilla/" directory.
     #
-    # Calling dirname twice like that won't work on VMS or AmigaOS
-    # but I doubt anybody runs Bugzilla on those.
-    #
-    # On mod_cgi this will be a relative path. On mod_perl it will be an
-    # absolute path.
-    my $libpath = dirname(dirname($INC{'Bugzilla/Constants.pm'}));
+    # Always use an absolute path, based on the location of this file.
+    my $libpath = realpath(dirname(dirname(__FILE__)));
     # We have to detaint $libpath, but we can't use Bugzilla::Util here.
     $libpath =~ /(.*)/;
     $libpath = $1;