diff --git a/languages/CMakeLists.txt b/languages/CMakeLists.txt
index 11cbbaf2b4..4e2fde2523 100644
--- a/languages/CMakeLists.txt
+++ b/languages/CMakeLists.txt
@@ -1,22 +1,22 @@
 ecm_optional_add_subdirectory(plugins)
 ecm_optional_add_subdirectory(qmljs)
 
 option(LEGACY_CPP_SUPPORT "Enable legacy C++ backend" OFF)
 
 if(LEGACY_CPP_SUPPORT)
     ecm_optional_add_subdirectory(cpp)
 else()
     find_package(Clang 3.5)
     set_package_properties(Clang PROPERTIES
-        PURPOSE "Clang libraries. Used for KDevelop's C++/C support plugin"
+        PURPOSE "Clang libraries. Used for KDevelop's C++/C support plugin. Please install a package providing libclang."
         TYPE REQUIRED
     )
 
     if (CLANG_FOUND)
         if (NOT CLANG_LIBCLANG_LIB)
             message(FATAL_ERROR "Could not find the Clang C library: libclang")
         endif()
 
         ecm_optional_add_subdirectory(clang)
     endif()
 endif()