diff --git a/src/eval.c b/src/eval.c
index a48b8f8..1d57c38 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -2849,6 +2849,7 @@
 	int	    vim9script = in_vim9script();
 	int	    evaluate = evalarg == NULL
 				   ? 0 : (evalarg->eval_flags & EVAL_EVALUATE);
+	long	    comp_lnum = SOURCING_LNUM;
 
 	if (getnext)
 	{
@@ -2904,6 +2905,8 @@
 	{
 	    int ret;
 
+	    // use the line of the comparison for messages
+	    SOURCING_LNUM = comp_lnum;
 	    if (vim9script && check_compare_types(type, rettv, &var2) == FAIL)
 	    {
 		ret = FAIL;