diff --git a/src/terminal.c b/src/terminal.c
index 683b74f..fde7721 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -6562,7 +6562,7 @@
     if (argvars[1].vval.v_list->lv_first == &range_list_item
 	    || argvars[1].vval.v_list->lv_len != 16)
     {
-	emsg(_(e_invalid_argument));
+	semsg(_(e_invalid_value_for_argument_str), "\"colors\"");
 	return;
     }
 
diff --git a/src/testdir/test_terminal.vim b/src/testdir/test_terminal.vim
index b0c29ec..596ae5d 100644
--- a/src/testdir/test_terminal.vim
+++ b/src/testdir/test_terminal.vim
@@ -2188,6 +2188,7 @@
   let colors[4] = 'Invalid'
   call assert_fails('call term_setansicolors(buf, colors)', 'E254:')
   call assert_fails('call term_setansicolors(buf, {})', 'E1211:')
+  call assert_fails('call term_setansicolors(buf, [])', 'E475: Invalid value for argument "colors"')
   set tgc&
 
   call StopShellInTerminal(buf)
diff --git a/src/version.c b/src/version.c
index 5906b9a..8d67376 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1509,
+/**/
     1508,
 /**/
     1507,