diff --git a/CI/before_script.osx.sh b/CI/before_script.osx.sh
index 08fbe76d6..930d89efa 100755
--- a/CI/before_script.osx.sh
+++ b/CI/before_script.osx.sh
@@ -17,6 +17,5 @@ cmake \
 -D DESIRED_QT_VERSION=5 \
 -D BUILD_ESMTOOL=FALSE \
 -D BUILD_MYGUI_PLUGIN=FALSE \
--D BUILD_OPENCS=FALSE \
 -G"Unix Makefiles" \
 ..