diff --git a/include/config.h b/include/config.h
index 008eeeb7..28c4dfa8 100644
--- a/include/config.h
+++ b/include/config.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef CONFIG_H
 #define CONFIG_H
 
diff --git a/include/core/block.h b/include/core/block.h
index 798e179c..6a787265 100644
--- a/include/core/block.h
+++ b/include/core/block.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef BLOCK_H
 #define BLOCK_H
 
diff --git a/include/core/blockdata.h b/include/core/blockdata.h
index 35c071fb..a8e29d36 100644
--- a/include/core/blockdata.h
+++ b/include/core/blockdata.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef BLOCKDATA_H
 #define BLOCKDATA_H
 
diff --git a/include/core/editcommands.h b/include/core/editcommands.h
index 69d2f14f..cbc98415 100644
--- a/include/core/editcommands.h
+++ b/include/core/editcommands.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef EDITCOMMANDS_H
 #define EDITCOMMANDS_H
 
diff --git a/include/core/event.h b/include/core/event.h
index 48d13253..c46d95eb 100644
--- a/include/core/event.h
+++ b/include/core/event.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef EVENT_H
 #define EVENT_H
 
diff --git a/include/core/heallocation.h b/include/core/heallocation.h
index fd00a22b..a39386c1 100644
--- a/include/core/heallocation.h
+++ b/include/core/heallocation.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef HEALLOCATION_H
 #define HEALLOCATION_H
 
diff --git a/include/core/history.h b/include/core/history.h
index 40576ff2..75883d2d 100644
--- a/include/core/history.h
+++ b/include/core/history.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef HISTORY_H
 #define HISTORY_H
 
diff --git a/include/core/imageexport.h b/include/core/imageexport.h
index e6552323..d195e471 100644
--- a/include/core/imageexport.h
+++ b/include/core/imageexport.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef IMAGEEXPORT_H
 #define IMAGEEXPORT_H
 
diff --git a/include/core/map.h b/include/core/map.h
index 4d34a071..639d7a02 100644
--- a/include/core/map.h
+++ b/include/core/map.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef MAP_H
 #define MAP_H
 
diff --git a/include/core/mapconnection.h b/include/core/mapconnection.h
index 8823e7bc..b6be238e 100644
--- a/include/core/mapconnection.h
+++ b/include/core/mapconnection.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef MAPCONNECTION_H
 #define MAPCONNECTION_H
 
diff --git a/include/core/maplayout.h b/include/core/maplayout.h
index e44a3646..d04fbab5 100644
--- a/include/core/maplayout.h
+++ b/include/core/maplayout.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef MAPLAYOUT_H
 #define MAPLAYOUT_H
 
diff --git a/include/core/metatile.h b/include/core/metatile.h
index 27d515ba..c016ae7c 100644
--- a/include/core/metatile.h
+++ b/include/core/metatile.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef METATILE_H
 #define METATILE_H
 
diff --git a/include/core/metatileparser.h b/include/core/metatileparser.h
index 1d423a72..7bf0b096 100644
--- a/include/core/metatileparser.h
+++ b/include/core/metatileparser.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef METATILEPARSER_H
 #define METATILEPARSER_H
 
diff --git a/include/core/paletteutil.h b/include/core/paletteutil.h
index a067dea3..abc1700a 100644
--- a/include/core/paletteutil.h
+++ b/include/core/paletteutil.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef PALETTEUTIL_H
 #define PALETTEUTIL_H
 
diff --git a/include/core/parseutil.h b/include/core/parseutil.h
index 22abe367..d3b7ee54 100644
--- a/include/core/parseutil.h
+++ b/include/core/parseutil.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef PARSEUTIL_H
 #define PARSEUTIL_H
 
diff --git a/include/core/regionmap.h b/include/core/regionmap.h
index a8158395..a24ae1ea 100644
--- a/include/core/regionmap.h
+++ b/include/core/regionmap.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef REGIONMAP_H
 #define REGIONMAP_H
 
diff --git a/include/core/tile.h b/include/core/tile.h
index 05349c4a..e2b1ec4d 100644
--- a/include/core/tile.h
+++ b/include/core/tile.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef TILE_H
 #define TILE_H
 
diff --git a/include/core/tileset.h b/include/core/tileset.h
index 9113788a..c6349cfe 100644
--- a/include/core/tileset.h
+++ b/include/core/tileset.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef TILESET_H
 #define TILESET_H
 
diff --git a/include/core/wildmoninfo.h b/include/core/wildmoninfo.h
index f0868f7f..06877622 100644
--- a/include/core/wildmoninfo.h
+++ b/include/core/wildmoninfo.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef GUARD_WILDMONINFO_H
 #define GUARD_WILDMONINFO_H
 
diff --git a/include/editor.h b/include/editor.h
index fc8cfe26..a24a1bca 100644
--- a/include/editor.h
+++ b/include/editor.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef EDITOR_H
 #define EDITOR_H
 
diff --git a/include/lib/orderedjson.h b/include/lib/orderedjson.h
index 5f791286..20463cee 100644
--- a/include/lib/orderedjson.h
+++ b/include/lib/orderedjson.h
@@ -51,6 +51,7 @@
  * THE SOFTWARE.
  */
 
+#pragma once
 #ifndef ORDERED_JSON_H
 #define ORDERED_JSON_H
 
diff --git a/include/lib/orderedmap.h b/include/lib/orderedmap.h
index 40fe08b8..40882d9f 100644
--- a/include/lib/orderedmap.h
+++ b/include/lib/orderedmap.h
@@ -21,6 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
+#pragma once
 #ifndef TSL_ORDERED_MAP_H
 #define TSL_ORDERED_MAP_H
 
diff --git a/include/lib/qstringhash.h b/include/lib/qstringhash.h
index 10947d6f..a9affaf7 100644
--- a/include/lib/qstringhash.h
+++ b/include/lib/qstringhash.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef QSTRINGHASH_H
 #define QSTRINGHASH_H
 
diff --git a/include/log.h b/include/log.h
index 87e0ae01..37571dae 100644
--- a/include/log.h
+++ b/include/log.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef LOG_H
 #define LOG_H
 
diff --git a/include/mainwindow.h b/include/mainwindow.h
index fbb6af6b..bee4222d 100644
--- a/include/mainwindow.h
+++ b/include/mainwindow.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
diff --git a/include/project.h b/include/project.h
index 179a5a93..fda3ea8f 100644
--- a/include/project.h
+++ b/include/project.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef PROJECT_H
 #define PROJECT_H
 
diff --git a/include/scripting.h b/include/scripting.h
index 99daac89..6f3b0d16 100644
--- a/include/scripting.h
+++ b/include/scripting.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef SCRIPTING_H
 #define SCRIPTING_H
 
diff --git a/include/settings.h b/include/settings.h
index 5b989ed5..d37283cd 100644
--- a/include/settings.h
+++ b/include/settings.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifndef SETTINGS_H
 #define SETTINGS_H