diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f9efac8..8e10776e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -175,7 +175,7 @@ if (UNIX)
             link_directories("/usr/X11R6/lib")
         endif()
 
-        if (${PKG_CONFIG_FOUND})
+        if (BARRIER_BUILD_GUI AND ${PKG_CONFIG_FOUND})
             pkg_check_modules (AVAHI_COMPAT REQUIRED avahi-compat-libdns_sd)
             include_directories (BEFORE SYSTEM ${AVAHI_COMPAT_INCLUDE_DIRS})
             set (CMAKE_REQUIRED_INCLUDES "${CMAKE_REQUIRED_INCLUDES};${AVAHI_COMPAT_INCLUDE_DIRS}")