diff --git a/src/version.c b/src/version.c
index f849252..ea77645 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3655,
+/**/
     3654,
 /**/
     3653,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 934f41b..fe692cb 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -8255,7 +8255,7 @@
 	    }
 	    else
 	    {
-		if (!valid_varname(arg, varlen, FALSE))
+		if (!valid_varname(arg, (int)varlen, FALSE))
 		    goto failed;
 		if (lookup_local(arg, varlen, NULL, cctx) == OK)
 		{