diff --git a/misc-scripts/doxygen_filter/EnsEMBL/PerlFilter.pm b/misc-scripts/doxygen_filter/EnsEMBL/PerlFilter.pm
index fdcea3038ad3fe4c1bb2e5926b1d6b7b65b8a52c..9916536df91176237b15956b61fb780d842436e4 100644
--- a/misc-scripts/doxygen_filter/EnsEMBL/PerlFilter.pm
+++ b/misc-scripts/doxygen_filter/EnsEMBL/PerlFilter.pm
@@ -445,7 +445,7 @@ sub code_action {
     
     push @big_buffer,$line; 
     # When we run out of open brackets, or we hit weird unpaired brackets in strings or comments
-    if ($brackets <=0 || $line =~ /^=/ || $line =~ /^\s*sub/ || $line =~ /^\s*1;/) {
+    if ($brackets <=0 || $line =~ /^=/ || $line =~ /^\s*sub[\s{]/ || $line =~ /^\s*1;/) {
         $state = NORMAL;
         push @big_buffer,"\@endcode\n </div>*/\n";
     	#Add fake function for doxygen to find after the comment.