diff --git a/src/common/gamecode/items.c b/src/common/gamecode/items.c
index cbc9004ea..3118d3b49 100644
--- a/src/common/gamecode/items.c
+++ b/src/common/gamecode/items.c
@@ -2,6 +2,8 @@
 #include <kernel/eressea.h>
 #include "items.h"
 
+#include "study.h"
+
 #include <kernel/curse.h>
 #include <kernel/building.h>
 #include <kernel/faction.h>
@@ -16,7 +18,6 @@
 #include <kernel/ship.h>
 #include <kernel/skill.h>
 #include <kernel/spell.h>
-#include <kernel/study.h>
 #include <kernel/unit.h>
 
 #include <items/demonseye.h>
diff --git a/src/eressea/korrektur.c b/src/eressea/korrektur.c
index 6b2fcaefe..16b4d0093 100644
--- a/src/eressea/korrektur.c
+++ b/src/eressea/korrektur.c
@@ -32,6 +32,7 @@
 /* gamecode includes */
 #include <gamecode/economy.h>
 #include <gamecode/monster.h>
+#include <gamecode/study.h>
 
 /* kernel includes */
 #include <kernel/alchemy.h>
@@ -55,7 +56,6 @@
 #include <kernel/skill.h>
 #include <kernel/spell.h>
 #include <kernel/spellid.h>
-#include <kernel/study.h>
 #include <kernel/teleport.h>
 #include <kernel/terrain.h>
 #include <kernel/terrainid.h>