diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index 6981acb89..005f9842c 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -128,7 +128,7 @@ if (BUILD_SUPPORTED)
     DFHACK_PLUGIN(infiniteSky infiniteSky.cpp)
     DFHACK_PLUGIN(isoworldremote isoworldremote.cpp PROTOBUFS isoworldremote)
     DFHACK_PLUGIN(jobutils jobutils.cpp)
-	add_subdirectory(labormanager)
+    add_subdirectory(labormanager)
     DFHACK_PLUGIN(lair lair.cpp)
     DFHACK_PLUGIN(liquids liquids.cpp Brushes.h LINK_LIBRARIES lua)
     DFHACK_PLUGIN(luasocket luasocket.cpp LINK_LIBRARIES clsocket lua dfhack-tinythread)