diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a3308aa..c98e468b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -163,11 +163,12 @@ if (UNIX)
             include_directories("/usr/local/include" "/usr/local/include/avahi-compat-libdns_sd")
             link_directories("/usr/local/lib")
         endif()
-	if (${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};${AVAHI_COMPAT_INCLUDE_DIRS}")
-	endif ()
+
+        if (${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}")
+        endif ()
 
         set (XKBlib "X11/Xlib.h;X11/XKBlib.h")
         set (CMAKE_EXTRA_INCLUDE_FILES "${XKBlib};X11/extensions/Xrandr.h")