diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8c6bd07c..261e1d98 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,7 +115,7 @@ else()
         add_definitions(-DHAS_ALSA)
     endif (ALSA_FOUND)
 
-    pkg_search_module(AVAHI REQUIRED avahi-client)
+    pkg_search_module(AVAHI avahi-client)
     if (AVAHI_FOUND)
         add_definitions(-DHAS_AVAHI)
     endif (AVAHI_FOUND)