diff --git a/lib/RELEASE-NOTES b/lib/RELEASE-NOTES
index 3a6ee92d9d..03364a06fb 100644
--- a/lib/RELEASE-NOTES
+++ b/lib/RELEASE-NOTES
@@ -13,13 +13,13 @@
 
 !!!The following new LyX functions have been introduced in 2.5:
 
-- The new function word-togglecase is a companion of word-upcase and
-  word-lowcase: it toggles each character between lowcase and upcase,
+- The new function word-invertcase is a companion of word-upcase and
+  word-lowcase: it inverts each character between lowcase and upcase,
   which is useful when one FORGOT THE cAPS lOCK KEY.
 
 !!!The following LyX functions have been changed in 2.5:
 
-- The funcion window-new does not take an optional <GEOMETRY>
+- The function window-new does not take an optional <GEOMETRY>
   parameter anymore. This only worked in windows and existed for
   internal reasons.
 
diff --git a/lib/bind/de/menus.bind b/lib/bind/de/menus.bind
index 3f0b166790..a194b64f24 100644
--- a/lib/bind/de/menus.bind
+++ b/lib/bind/de/menus.bind
@@ -154,7 +154,7 @@ Format 5
 
 \bind "M-z Down"		"word-lowcase"
 \bind "M-z Up"			"word-upcase"
-\bind "M-z Left"		"word-togglecase"
+\bind "M-z Left"		"word-invertcase"
 \bind "M-z Right"		"word-capitalize"
 
 \bind "M-z space"		"font-default"
diff --git a/lib/bind/menus.bind b/lib/bind/menus.bind
index 4fdda8bbfc..ced3cd9df0 100644
--- a/lib/bind/menus.bind
+++ b/lib/bind/menus.bind
@@ -155,7 +155,7 @@ Format 5
 
 \bind "M-c Down"		"word-lowcase"
 \bind "M-c Up"			"word-upcase"
-\bind "M-c Left"		"word-togglecase"
+\bind "M-c Left"		"word-invertcase"
 \bind "M-c Right"		"word-capitalize"
 
 \bind "M-c space"		"font-default"
diff --git a/lib/ui/stdmenus.inc b/lib/ui/stdmenus.inc
index 01a4def3ff..fd38567844 100644
--- a/lib/ui/stdmenus.inc
+++ b/lib/ui/stdmenus.inc
@@ -190,7 +190,7 @@ Menuset
 		Item "Capitalize|p" "word-capitalize"
 		Item "Uppercase|U" "word-upcase"
 		Item "Lowercase|L" "word-lowcase"
-		Item "Toggle Case|T" "word-togglecase"
+		Item "Invert Case|I" "word-invertcase"
 	End
 
 	Menu "edit_textstyles"
diff --git a/src/FuncCode.h b/src/FuncCode.h
index 691305274d..f0a377879e 100644
--- a/src/FuncCode.h
+++ b/src/FuncCode.h
@@ -512,7 +512,7 @@ enum FuncCode
 	LFUN_REFERENCE_INSERT,          // spitz, 20240728
 	// 400
 	LFUN_REFERENCE_TO_PARAGRAPH,    // spitz, 20240728
-	LFUN_WORD_TOGGLECASE,               // lasgouttes 20241014
+	LFUN_WORD_INVERTCASE,           // lasgouttes 20241015
 	LFUN_LASTACTION                 // end of the table
 };
 
diff --git a/src/LyXAction.cpp b/src/LyXAction.cpp
index 6049745a3e..8d6982993f 100644
--- a/src/LyXAction.cpp
+++ b/src/LyXAction.cpp
@@ -4655,17 +4655,17 @@ void LyXAction::init()
 		{ LFUN_WORD_SELECT, "word-select", ReadOnly, Edit },
 
 /*!
- * \var lyx::FuncCode lyx::LFUN_WORD_TOGGLECASE
+ * \var lyx::FuncCode lyx::LFUN_WORD_INVERTCASE
  * \li Action: Invert the case of the words in the selection or word at cursor position.
                This is useful when one FORGOT THE cAPS lOCK KEY.
- * \li Syntax: word-togglecase [<SEL_TYPE>]
+ * \li Syntax: word-invertcase [<SEL_TYPE>]
  * \li Params: <SEL_TYPE>: if this is equal to "partial", then the
  *             default word starts at cursor position (emacs-style).
  *             Otherwise, the whole word is considered.
  * \li Origin: lasgouttes, 14 Oct 2024
  * \endvar
  */
-		{ LFUN_WORD_TOGGLECASE, "word-togglecase", Noop, Edit },
+		{ LFUN_WORD_INVERTCASE, "word-invertcase", Noop, Edit },
 
 /*!
  * \var lyx::FuncCode lyx::LFUN_WORD_UPCASE
diff --git a/src/Paragraph.cpp b/src/Paragraph.cpp
index 33faa59254..23ba81fa86 100644
--- a/src/Paragraph.cpp
+++ b/src/Paragraph.cpp
@@ -4801,7 +4801,7 @@ void Paragraph::changeCase(BufferParams const & bparams, pos_type pos,
 			case text_uppercase:
 				newChar = uppercase(oldChar);
 				break;
-			case text_togglecase:
+			case text_invertcase:
 				if (isUpperCase(oldChar))
 					newChar = lowercase(oldChar);
 				else if (isLowerCase(oldChar))
diff --git a/src/Paragraph.h b/src/Paragraph.h
index 91bc40eba2..8bd9a6ee5f 100644
--- a/src/Paragraph.h
+++ b/src/Paragraph.h
@@ -116,7 +116,7 @@ enum TextCase {
 	///
 	text_uppercase,
 	///
-	text_togglecase
+	text_invertcase
 };
 
 
diff --git a/src/Text.cpp b/src/Text.cpp
index 4c7a445fc5..c26a5da35e 100644
--- a/src/Text.cpp
+++ b/src/Text.cpp
@@ -4946,8 +4946,8 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 		changeCase(cur, text_capitalization, cmd.getArg(0) == "partial");
 		break;
 
-	case LFUN_WORD_TOGGLECASE:
-		changeCase(cur, text_togglecase, cmd.getArg(0) == "partial");
+	case LFUN_WORD_INVERTCASE:
+		changeCase(cur, text_invertcase, cmd.getArg(0) == "partial");
 		break;
 
 	case LFUN_CHARS_TRANSPOSE:
@@ -7163,7 +7163,7 @@ bool Text::getStatus(Cursor & cur, FuncRequest const & cmd,
 	case LFUN_WORD_UPCASE:
 	case LFUN_WORD_LOWCASE:
 	case LFUN_WORD_CAPITALIZE:
-	case LFUN_WORD_TOGGLECASE:
+	case LFUN_WORD_INVERTCASE:
 	case LFUN_CHARS_TRANSPOSE:
 	case LFUN_SERVER_GET_XY:
 	case LFUN_SERVER_SET_XY: