diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64a14ad9d1985db3e2bcd1002638d6b05fc20f6d..ff5f05db37f52784595b8442a826c1373e59a6e6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,6 +25,7 @@ armarx_find_package(PUBLIC Ceres QUIET)
 # Optional dependencies
 armarx_find_package(PUBLIC VTK)
 armarx_find_package(PUBLIC SemanticObjectRelations QUIET)
+armarx_find_package(PUBLIC OpenCV QUIET)  # Required as RobotAPI is a legacy project.
 
 
 #include(FetchContent)