diff --git a/CMakeLists.txt b/CMakeLists.txt
index 28f83961c7d30e2b57c684ac2554d0d10bab71d9..bd6638031f95c5d15f2d209c2b9237c0de673b0a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ set(ARMARX_ENABLE_DEPENDENCY_VERSION_CHECK_DEFAULT TRUE)
 set(ARMARX_ENABLE_AUTO_CODE_FORMATTING TRUE)
 
 armarx_project("RobotAPI")
-depends_on_armarx_package(ArmarXGui "OPTIONAL")
+depends_on_armarx_package(ArmarXGui)
 
 set(ArmarX_Simox_VERSION 2.3.48)
 option(REQUIRE_SIMOX "If enabled the Simox dependency is a required dependency" TRUE)