diff --git a/Applications/DataExplorer/DataExplorer.cmake b/Applications/DataExplorer/DataExplorer.cmake
index 39fee0ee07935ce62a836ee7ec11dadb86b2e94d..3d78aa32ade2ccf38f1016b37d96e118753f2736 100644
--- a/Applications/DataExplorer/DataExplorer.cmake
+++ b/Applications/DataExplorer/DataExplorer.cmake
@@ -69,6 +69,9 @@ target_link_libraries(DataExplorer
 if(NOT APPLE AND OGS_USE_CONAN)
     # HACK for unresolved external
     target_link_libraries(DataExplorer vtkGUISupportQt-8.1)
+    if(UNIX)
+        target_link_libraries(DataExplorer Qt5::X11Extras)
+    endif()
 endif()
 
 # Workaround for Windows conan tiff-package
diff --git a/scripts/cmake/Find.cmake b/scripts/cmake/Find.cmake
index ab867da24e3424e82b1f2ce5b29e4cef8c95ee08..6530e929ff7ce5f103c77846db3b3922d4fe64da 100644
--- a/scripts/cmake/Find.cmake
+++ b/scripts/cmake/Find.cmake
@@ -97,7 +97,11 @@ find_package(Metis QUIET)
 
 ## Qt5 library ##
 if(OGS_BUILD_GUI)
-    find_package(Qt5 5.2 REQUIRED Gui Widgets Xml XmlPatterns)
+    set(QT_MODULES Gui Widgets Xml XmlPatterns)
+    if(OGS_USE_CONAN AND UNIX AND NOT APPLE)
+        set(QT_MODULES ${QT_MODULES} X11Extras)
+    endif()
+    find_package(Qt5 5.2 REQUIRED ${QT_MODULES})
     cmake_policy(SET CMP0020 NEW)
     set(CMAKE_AUTOMOC TRUE)
     set(CMAKE_AUTOUIC TRUE)