diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5c4ba6de..5a2a4eb1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -187,7 +187,7 @@ if (UNIX)
             message (FATAL_ERROR "Missing header: " ${XKBlib})
         endif()
 
-        if (NOT HAVE_DNSSD)
+        if (BARRIER_BUILD_GUI AND NOT HAVE_DNSSD)
             message (FATAL_ERROR "Missing header: dns_sd.h")
         endif()