diff --git a/testing/coverage/lcov_html.sh b/testing/coverage/lcov_html.sh
index 5a751f995f..146d1fb89e 100755
--- a/testing/coverage/lcov_html.sh
+++ b/testing/coverage/lcov_html.sh
@@ -93,7 +93,7 @@ fi
 
 # Files and directories that will be removed from the counts in step 5. Directories
 # need to be surrounded by escaped wildcards.
-REMOVE_TARGETS="*.yy *.ll *.y *.l \*/bro.dir/\* *.bif \*/zeek.dir/\* \*/src/3rdparty/\* \*/src/zeek/3rdparty/\* \*/auxil/\* "
+REMOVE_TARGETS="*.yy *.ll *.y *.l \*/bro.dir/\* *.bif \*/zeek.dir/\* \*/src/3rdparty/\* \*/src/zeek/3rdparty/\* \*/auxil/\* \*/build/zeek/3rdparty/\*"
 
 # 1. Move to base dir, create tmp dir
 cd ../../