diff --git a/.gitignore b/.gitignore
index b6d81a4906..013e5460da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -86,4 +86,12 @@ etc/settings.csh
 etc/setteings.sh
 
 
+# The following files are blacklisted because of a DMCA complaint by ANSYS.
+src/lduSolvers/tools/PriorityArray.C
+src/lduSolvers/tools/PriorityArray.H
+src/lduSolvers/amg/amgPolicy/samgPolicy.C
+src/lduSolvers/amg/amgPolicy/samgPolicy.H
+src/lduSolvers/amg/amgPolicy/aamgPolicy.C
+src/lduSolvers/amg/amgPolicy/aamgPolicy.H
+
 # end-of-file