diff --git a/deep_fixitycheck.pl b/deep_fixitycheck.pl
index aa54abbbfa1a0d3ce1f2bc1c98ff1625966d919e..09221219d80ff62e4d58a0f4f66f7077a89e88d1 100644
--- a/deep_fixitycheck.pl
+++ b/deep_fixitycheck.pl
@@ -27,7 +27,7 @@ use XML::LibXML;
 use Time::Progress;
 use XML::LibXML::XPathContext;
 use Getopt::Long::Complete qw(GetOptionsWithCompletion);
-
+use Digest::CRC;
 use Digest::MD5;
 use Digest::SHA;
 use Pod::Usage;