diff --git a/source/duke3d/src/actors.h b/source/duke3d/src/actors.h
index e49a20850..3fb1c6fa7 100644
--- a/source/duke3d/src/actors.h
+++ b/source/duke3d/src/actors.h
@@ -40,7 +40,6 @@ BEGIN_DUKE_NS
 #define ACTOR_MAXFALLINGZVEL 6144
 #define ACTOR_ONWATER_ADDZ (24<<8)
 
-// KEEPINSYNC lunatic/con_lang.lua
 #define STAT_DEFAULT        0
 #define STAT_ACTOR          1
 #define STAT_ZOMBIEACTOR    2
@@ -298,7 +297,6 @@ typedef struct
 } tiledata_t;
 
 
-// KEEPINSYNC lunatic/con_lang.lua
 enum sflags_t
 {
     SFLAG_SHADOW        = 0x00000001,
diff --git a/source/duke3d/src/duke3d.h b/source/duke3d/src/duke3d.h
index 1cc8470a1..ee0915fad 100644
--- a/source/duke3d/src/duke3d.h
+++ b/source/duke3d/src/duke3d.h
@@ -58,7 +58,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #define RECSYNCBUFSIZ       2520   //2520 is the (LCM of 1-8)*3
 #define MOVEFIFOSIZ         2
 
-// KEEPINSYNC lunatic/con_lang.lua
 #define MAXLEVELS           64
 #define MAXGAMETYPES        16
 
diff --git a/source/duke3d/src/events_defs.h b/source/duke3d/src/events_defs.h
index 0ec7d90b8..0af073b17 100644
--- a/source/duke3d/src/events_defs.h
+++ b/source/duke3d/src/events_defs.h
@@ -5,7 +5,7 @@
 BEGIN_DUKE_NS
 
 // the order of these can't be changed or else compatibility with EDuke 2.0 mods will break
-// KEEPINSYNC with EventNames[] and lunatic/con_lang.lua
+// KEEPINSYNC with EventNames[]
 enum GameEvent_t {
     EVENT_INIT,  // 0
     EVENT_ENTERLEVEL,
diff --git a/source/duke3d/src/gamedef.cpp b/source/duke3d/src/gamedef.cpp
index ec12539aa..deb008754 100644
--- a/source/duke3d/src/gamedef.cpp
+++ b/source/duke3d/src/gamedef.cpp
@@ -861,7 +861,7 @@ char const *VM_GetKeywordForID(int32_t id)
     return "<unknown instruction>";
 }
 
-// KEEPINSYNC with enum GameEvent_t and lunatic/con_lang.lua
+// KEEPINSYNC with enum GameEvent_t
 const char *EventNames[MAXEVENTS] =
 {
     "EVENT_INIT",
@@ -5676,7 +5676,6 @@ static void C_AddDefinition(const char *lLabel,int32_t lValue,int32_t lType)
     labelcode[g_labelCnt++] = lValue;
 }
 
-// KEEPINSYNC lunatic/con_lang.lua
 static void C_AddDefaultDefinitions(void)
 {
     for (int i=0; i<MAXEVENTS; i++)
diff --git a/source/duke3d/src/gamedef.h b/source/duke3d/src/gamedef.h
index 18190cda8..a97643c76 100644
--- a/source/duke3d/src/gamedef.h
+++ b/source/duke3d/src/gamedef.h
@@ -189,7 +189,6 @@ extern const tokenmap_t iter_tokens[];
 
 extern char const * VM_GetKeywordForID(int32_t id);
 
-// KEEPINSYNC lunatic/con_lang.lua
 enum SystemString_t {
     STR_MAPNAME,
     STR_MAPFILENAME,
@@ -750,7 +749,6 @@ enum PalDataLabel_t
     PALDATA_END
 };
 
-// KEEPINSYNC lunatic/con_lang.lua
 enum ProjectileLabel_t
 {
     PROJ_WORKSLIKE,  // 0
@@ -1342,8 +1340,6 @@ enum IterationTypes_t
     \
     TRANSFORM(CON_END)
 
-// KEEPINSYNC with the keyword list in lunatic/con_lang.lua
-
 #define ENUM_TRANSFORM(ENUM_CONST) ENUM_CONST
 #define COMMA ,
 enum ScriptKeywords_t
diff --git a/source/duke3d/src/global.h b/source/duke3d/src/global.h
index d61e2a6d6..8d56d0a4f 100644
--- a/source/duke3d/src/global.h
+++ b/source/duke3d/src/global.h
@@ -41,7 +41,6 @@ BEGIN_DUKE_NS
 #endif
 
 #define MAXINTERPOLATIONS MAXSPRITES
-// KEEPINSYNC lunatic/con_lang.lua
 
 // duke3d global soup :(
 
diff --git a/source/duke3d/src/player.h b/source/duke3d/src/player.h
index e503b062e..e95d14069 100644
--- a/source/duke3d/src/player.h
+++ b/source/duke3d/src/player.h
@@ -138,7 +138,6 @@ typedef struct {
 //  * char --> int8_t
 // Need to carefully think about implications!
 // TODO: rearrange this if the opportunity arises!
-// KEEPINSYNC lunatic/_defs_game.lua
 typedef struct {
     vec3_t pos, opos;
     vec3_t vel, npos;
@@ -210,7 +209,6 @@ typedef struct {
     int8_t padding_[1];
 } DukePlayer_t;
 
-// KEEPINSYNC lunatic/_defs_game.lua
 typedef struct
 {
     DukePlayer_t *ps;
@@ -237,7 +235,6 @@ typedef struct
 } playerdata_t;
 #pragma pack(pop)
 
-// KEEPINSYNC lunatic/con_lang.lua
 typedef struct
 {
     // NOTE: the member names must be identical to aplWeapon* suffixes.
@@ -299,7 +296,6 @@ typedef struct {
     int32_t userdata; // 4b
 } projectile_t;
 
-// KEEPINSYNC lunatic/_defs_game.lua
 typedef struct {
     int32_t cur, count;  // "cur" is the only member that is *used*
     int32_t gunposx, lookhalfang;  // weapon_xoffset, ps->look_ang>>1
diff --git a/source/duke3d/src/sounds.h b/source/duke3d/src/sounds.h
index 6180fb80b..a48dd5bea 100644
--- a/source/duke3d/src/sounds.h
+++ b/source/duke3d/src/sounds.h
@@ -35,7 +35,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 BEGIN_DUKE_NS
 
-// KEEPINSYNC lunatic/con_lang.lua
 #define MAXSOUNDS           4096
 #define LOUDESTVOLUME       111