diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index bf3c31678..b1ed1d4ac 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -93,7 +93,7 @@ if(BUILD_SUPPORTED)
     dfhack_plugin(blueprint blueprint.cpp LINK_LIBRARIES lua)
     dfhack_plugin(burrows burrows.cpp LINK_LIBRARIES lua)
     dfhack_plugin(building-hacks building-hacks.cpp LINK_LIBRARIES lua)
-    dfhack_plugin(buildingplan buildingplan.cpp buildingplan-lib.cpp buildingplan-planner.cpp buildingplan-rooms.cpp LINK_LIBRARIES lua)
+    dfhack_plugin(buildingplan buildingplan.cpp buildingplan-planner.cpp buildingplan-rooms.cpp LINK_LIBRARIES lua)
     dfhack_plugin(changeitem changeitem.cpp)
     dfhack_plugin(changelayer changelayer.cpp)
     dfhack_plugin(changevein changevein.cpp)
diff --git a/plugins/buildingplan-lib.cpp b/plugins/buildingplan-lib.cpp
deleted file mode 100644
index e05d9b9dc..000000000
--- a/plugins/buildingplan-lib.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "buildingplan-lib.h"
-
-#include <cstdarg>
-#include "Core.h"
-
-using namespace DFHack;
-
-bool show_debugging = false;
-
-void debug(const char *fmt, ...)
-{
-    if (!show_debugging)
-        return;
-
-    color_ostream_proxy out(Core::getInstance().getConsole());
-    out.print("DEBUG(buildingplan): ");
-    va_list args;
-    va_start(args, fmt);
-    out.vprint(fmt, args);
-    va_end(args);
-    out.print("\n");
-}
diff --git a/plugins/buildingplan-planner.cpp b/plugins/buildingplan-planner.cpp
index 7aad342e5..9e754742d 100644
--- a/plugins/buildingplan-planner.cpp
+++ b/plugins/buildingplan-planner.cpp
@@ -15,8 +15,7 @@
 #include "LuaTools.h"
 #include "uicommon.h"
 
-#include "buildingplan-planner.h"
-#include "buildingplan-lib.h"
+#include "buildingplan.h"
 
 static const std::string planned_building_persistence_key_v1 = "buildingplan/constraints";
 static const std::string planned_building_persistence_key_v2 = "buildingplan/constraints2";
diff --git a/plugins/buildingplan-rooms.cpp b/plugins/buildingplan-rooms.cpp
index 87cd413d8..a08c85804 100644
--- a/plugins/buildingplan-rooms.cpp
+++ b/plugins/buildingplan-rooms.cpp
@@ -1,5 +1,4 @@
-#include "buildingplan-rooms.h"
-#include "buildingplan-lib.h"
+#include "buildingplan.h"
 
 #include <df/entity_position.h>
 #include <df/job_type.h>
diff --git a/plugins/buildingplan.cpp b/plugins/buildingplan.cpp
index d0eeb28d8..594eaf48f 100644
--- a/plugins/buildingplan.cpp
+++ b/plugins/buildingplan.cpp
@@ -14,7 +14,7 @@
 
 #include "uicommon.h"
 #include "listcolumn.h"
-#include "buildingplan-lib.h"
+#include "buildingplan.h"
 
 DFHACK_PLUGIN("buildingplan");
 #define PLUGIN_VERSION "2.0"
@@ -31,6 +31,22 @@ bool all_enabled = false;
 bool in_dummy_screen = false;
 std::unordered_map<BuildingTypeKey, bool, BuildingTypeKeyHash> planmode_enabled;
 
+bool show_debugging = false;
+
+void debug(const char *fmt, ...)
+{
+    if (!show_debugging)
+        return;
+
+    color_ostream_proxy out(Core::getInstance().getConsole());
+    out.print("DEBUG(buildingplan): ");
+    va_list args;
+    va_start(args, fmt);
+    out.vprint(fmt, args);
+    va_end(args);
+    out.print("\n");
+}
+
 class ViewscreenChooseMaterial : public dfhack_viewscreen
 {
 public:
diff --git a/plugins/buildingplan-lib.h b/plugins/buildingplan.h
similarity index 100%
rename from plugins/buildingplan-lib.h
rename to plugins/buildingplan.h