diff --git a/constants/script_constants.asm b/constants/script_constants.asm
index bd03be5b9..fe5d2d7c4 100644
--- a/constants/script_constants.asm
+++ b/constants/script_constants.asm
@@ -9,6 +9,8 @@ LAST_TALKED EQU -2
 	const STRING_BUFFER_5 ; use wStringBuffer5
 NUM_STRING_BUFFERS EQU const_value
 
+STRING_BUFFER_LENGTH EQU 19
+
 ; checkmoney/takemoney accounts
 	const_def
 	const YOUR_MONEY ; 0
diff --git a/docs/bugs_and_glitches.md b/docs/bugs_and_glitches.md
index 9c93eb8fc..9b50f2a7e 100644
--- a/docs/bugs_and_glitches.md
+++ b/docs/bugs_and_glitches.md
@@ -1750,7 +1750,7 @@ The exact cause of this bug is unknown.
  	ld de, wStringBuffer1
  	ld a, BANK("Evolutions and Attacks")
 -	ld bc, 10
-+	ld bc, wStringBuffer2 - wStringBuffer1
++	ld bc, STRING_BUFFER_LENGTH
  	call FarCopyBytes
 ```
 
diff --git a/engine/battle/effect_commands.asm b/engine/battle/effect_commands.asm
index b1070e8d9..7876fb90e 100644
--- a/engine/battle/effect_commands.asm
+++ b/engine/battle/effect_commands.asm
@@ -4711,7 +4711,7 @@ GetStatName:
 
 .Copy:
 	ld de, wStringBuffer2
-	ld bc, wStringBuffer3 - wStringBuffer2
+	ld bc, STRING_BUFFER_LENGTH
 	jp CopyBytes
 
 INCLUDE "data/battle/stat_names.asm"
diff --git a/engine/items/tmhm.asm b/engine/items/tmhm.asm
index ea990d849..2e0cde341 100644
--- a/engine/items/tmhm.asm
+++ b/engine/items/tmhm.asm
@@ -73,7 +73,7 @@ AskTeachTMHM:
 ChooseMonToLearnTMHM:
 	ld hl, wStringBuffer2
 	ld de, wTMHMMoveNameBackup
-	ld bc, 12
+	ld bc, MOVE_NAME_LENGTH - 1
 	call CopyBytes
 	call ClearBGPalettes
 ChooseMonToLearnTMHM_NoRefresh:
@@ -97,7 +97,7 @@ ChooseMonToLearnTMHM_NoRefresh:
 	push bc
 	ld hl, wTMHMMoveNameBackup
 	ld de, wStringBuffer2
-	ld bc, 12
+	ld bc, MOVE_NAME_LENGTH - 1
 	call CopyBytes
 	pop af ; now contains the original contents of af
 	ret
diff --git a/engine/overworld/scripting.asm b/engine/overworld/scripting.asm
index a8b95d3b2..370edb5a2 100644
--- a/engine/overworld/scripting.asm
+++ b/engine/overworld/scripting.asm
@@ -1590,7 +1590,7 @@ GetStringBuffer:
 
 CopyConvertedText:
 	ld hl, wStringBuffer3
-	ld bc, wStringBuffer4 - wStringBuffer3
+	ld bc, STRING_BUFFER_LENGTH
 	call AddNTimes
 	call CopyName2
 	ret
diff --git a/wram.asm b/wram.asm
index 121eb0bc7..64fcd5273 100644
--- a/wram.asm
+++ b/wram.asm
@@ -1675,7 +1675,8 @@ wBufferMonNick:: ds MON_NAME_LENGTH
 wBufferMonOT:: ds NAME_LENGTH
 wBufferMon:: party_struct wBufferMon
 	ds 8
-wMonOrItemNameBuffer:: ds 22
+wMonOrItemNameBuffer:: ds NAME_LENGTH
+	ds NAME_LENGTH
 
 NEXTU
 ; poke seer
@@ -2019,11 +2020,11 @@ ENDU
 
 wTMHMMoveNameBackup:: ds MOVE_NAME_LENGTH
 
-wStringBuffer1:: ds 19
-wStringBuffer2:: ds 19
-wStringBuffer3:: ds 19
-wStringBuffer4:: ds 19
-wStringBuffer5:: ds 19
+wStringBuffer1:: ds STRING_BUFFER_LENGTH
+wStringBuffer2:: ds STRING_BUFFER_LENGTH
+wStringBuffer3:: ds STRING_BUFFER_LENGTH
+wStringBuffer4:: ds STRING_BUFFER_LENGTH
+wStringBuffer5:: ds STRING_BUFFER_LENGTH
 
 wBattleMenuCursorBuffer:: dw