diff --git a/lib/layouts/theorems-without-preamble.inc b/lib/layouts/theorems-without-preamble.inc
index c6d8f6c1dd..2f5120498d 100644
--- a/lib/layouts/theorems-without-preamble.inc
+++ b/lib/layouts/theorems-without-preamble.inc
@@ -294,7 +294,7 @@ Style Sol
 	  Mandatory	1
 	  LabelString	"Label of Problem"
 	  Tooltip	"Label of the corresponding problem"
-	  InToc
+	  IsTocCaption true
 	EndArgument
 End