diff --git a/awesomeConfig.cmake b/awesomeConfig.cmake
index 6d5cc42fe..e5af83be4 100644
--- a/awesomeConfig.cmake
+++ b/awesomeConfig.cmake
@@ -142,7 +142,7 @@ pkg_check_modules(AWESOME_REQUIRED REQUIRED
     xcb-aux>=0.3.0
     xcb-atom>=0.3.0
     xcb-keysyms>=0.3.0
-    xcb-icccm>=0.3.0
+    xcb-icccm>=0.3.3
     xcb-image>=0.3.0
     xcb-property>=0.3.0
     cairo-xcb
diff --git a/client.c b/client.c
index feeefcd53..4d3f5c92a 100644
--- a/client.c
+++ b/client.c
@@ -1649,7 +1649,7 @@ luaA_client_index(lua_State *L)
                                    xcb_get_wm_class_unchecked(globalconf.connection, (*c)->win),
                                    &hint, NULL))
              return 0;
-        lua_pushstring(L, hint.class);
+        lua_pushstring(L, hint.class_name);
         xcb_get_wm_class_reply_wipe(&hint);
         break;
       case A_TK_INSTANCE:
@@ -1657,7 +1657,7 @@ luaA_client_index(lua_State *L)
                                    xcb_get_wm_class_unchecked(globalconf.connection, (*c)->win),
                                    &hint, NULL))
             return 0;
-        lua_pushstring(L, hint.name);
+        lua_pushstring(L, hint.instance_name);
         xcb_get_wm_class_reply_wipe(&hint);
         break;
       case A_TK_ROLE: