diff --git a/doc/bugs/bug_in_download_prebuilt_linux_tarball__44___and_constraints_issues_with_3.20121112.pl b/doc/bugs/bug_in_download_prebuilt_linux_tarball__44___and_constraints_issues_with_3.20121112.mdwn
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rename from doc/bugs/bug_in_download_prebuilt_linux_tarball__44___and_constraints_issues_with_3.20121112.pl
rename to doc/bugs/bug_in_download_prebuilt_linux_tarball__44___and_constraints_issues_with_3.20121112.mdwn