diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,7 +26,7 @@
   Test
   Widgets
 )
-find_package(Phonon4Qt5)
+find_package(Phonon4Qt5 REQUIRED)
 
 find_package(KF5 REQUIRED COMPONENTS
   Completion