diff --git a/CMakeLists.txt b/CMakeLists.txt
index 322c12f9a..d490b6bb7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -136,6 +136,9 @@ include_directories(${OPENGL_INCLUDE_DIR})
 if(UNIX AND NOT APPLE)
     if(USE_XRANDR)
         find_package(Xrandr REQUIRED)
+        if(NOT XRANDR_FOUND)
+            message(FATAL_ERROR "XRANDR not found.")
+        endif()
     else()
         find_library(IRRLICHT_XF86VM_LIBRARY Xxf86vm)
         mark_as_advanced(IRRLICHT_XF86VM_LIBRARY)