diff --git a/.travis.yml b/.travis.yml
index 035942a7e..8c8bdc786 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,13 +10,13 @@ branches:
 
 env:
   matrix:
-    - LUA=5.2 DO_CHECKQA=1 LUANAME=lua5.2 BUILD_APIDOC=true DO_COVERAGE=coveralls
+    - LUA=5.2 DO_CHECKQA=1 LUANAME=lua5.2 DO_COVERAGE=coveralls
     # luajit: installed from source.
     - LUA=5.1 LUANAME=luajit-2.0 LUALIBRARY=/usr/lib/libluajit-5.1.so LUAROCKS_ARGS=--lua-suffix=jit-2.0.4 TEST_PREV_COMMITS=1
     # Note: luarocks does not work with Lua 5.0.
     - LUA=5.1 LUANAME=lua5.1 BUILD_IN_DIR=/tmp/awesome-build
     # Lua 5.2 with older lgi and screen size not divisible by 2.
-    - LUA=5.2 LUANAME=lua5.2 LGIVER=0.8.0 TESTS_SCREEN_SIZE=1921x1079
+    - LUA=5.2 LUANAME=lua5.2 LGIVER=0.8.0 TESTS_SCREEN_SIZE=1921x1079 BUILD_APIDOC=true
     # Lua 5.3 isn't available in Ubuntu Trusty, so some magic below installs it.
     - LUA=5.3 LUANAME=lua5.3 LUALIBRARY=/usr/lib/liblua.so DO_COVERAGE=codecov
   global: