diff --git a/lib/layouts/theorems-ams-bytype.inc b/lib/layouts/theorems-ams-bytype.inc
index 094c530d91..48527845e2 100644
--- a/lib/layouts/theorems-ams-bytype.inc
+++ b/lib/layouts/theorems-ams-bytype.inc
@@ -54,7 +54,7 @@ Style Theorem
 	LatexName             thm
 	NextNoIndent          1
 	Argument 1
-		LabelString   "Alternative Theorem String"
+		LabelString   "Alternative Theorem String|S"
 		Tooltip       "Alternative theorem string"
 	EndArgument
 	LabelSep              xx
diff --git a/lib/layouts/theorems-ams.inc b/lib/layouts/theorems-ams.inc
index fd454d2710..5ff8b211a8 100644
--- a/lib/layouts/theorems-ams.inc
+++ b/lib/layouts/theorems-ams.inc
@@ -28,7 +28,7 @@ Style Theorem
 	LatexName             thm
 	NextNoIndent          1
 	Argument 1
-		LabelString   "Alternative Theorem String"
+		LabelString   "Alternative Theorem String|S"
 		Tooltip       "Alternative theorem string"
 	EndArgument
 	LabelSep              xx
diff --git a/lib/layouts/theorems-bytype.inc b/lib/layouts/theorems-bytype.inc
index 56aebbe1f0..0167f9bd6f 100644
--- a/lib/layouts/theorems-bytype.inc
+++ b/lib/layouts/theorems-bytype.inc
@@ -30,7 +30,7 @@ Style Theorem
 	LatexName             thm
 	NextNoIndent          1
 	Argument 1
-		LabelString   "Alternative Theorem String"
+		LabelString   "Alternative Theorem String|S"
 		Tooltip       "Alternative theorem string"
 	EndArgument
 	LabelSep              xx
diff --git a/lib/layouts/theorems-starred.inc b/lib/layouts/theorems-starred.inc
index 7034c768ed..bc537dddee 100644
--- a/lib/layouts/theorems-starred.inc
+++ b/lib/layouts/theorems-starred.inc
@@ -29,7 +29,7 @@ Style Theorem*
 	LabelString           "Theorem."
 	NextNoIndent          1
 	Argument 1
-		LabelString   "Alternative Theorem String"
+		LabelString   "Alternative Theorem String|S"
 		Tooltip       "Alternative theorem string"
 	EndArgument
 	LabelSep              xx
diff --git a/lib/layouts/theorems.inc b/lib/layouts/theorems.inc
index 0484354dfe..d0db53b3d1 100644
--- a/lib/layouts/theorems.inc
+++ b/lib/layouts/theorems.inc
@@ -28,7 +28,7 @@ Style Theorem
 	LatexName             thm
 	NextNoIndent          1
 	Argument 1
-		LabelString   "Alternative Theorem String"
+		LabelString   "Alternative Theorem String|S"
 		Tooltip       "Alternative theorem string"
 	EndArgument
 	LabelSep              xx