diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index d63bec4..4d4450d 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -86,13 +86,13 @@
 endfunc
 
 func Test_test_void()
-  call assert_fails('echo 1 == test_void()', 'E685:')
+  call assert_fails('echo 1 == test_void()', 'E1031:')
   if has('float')
-    call assert_fails('echo 1.0 == test_void()', 'E685:')
+    call assert_fails('echo 1.0 == test_void()', 'E1031:')
   endif
   call assert_fails('let x = json_encode(test_void())', 'E685:')
   call assert_fails('let x = copy(test_void())', 'E685:')
-  call assert_fails('let x = copy([test_void()])', 'E685:')
+  call assert_fails('let x = copy([test_void()])', 'E1031:')
 endfunc
 
 func Test_len()
diff --git a/src/typval.c b/src/typval.c
index b19140d..21ecd87 100644
--- a/src/typval.c
+++ b/src/typval.c
@@ -591,7 +591,6 @@
 	case VAR_NUMBER:
 	case VAR_BOOL:
 	case VAR_SPECIAL:
-	case VAR_VOID:
 	    to->vval.v_number = from->vval.v_number;
 	    break;
 	case VAR_FLOAT:
@@ -664,6 +663,9 @@
 		++to->vval.v_dict->dv_refcount;
 	    }
 	    break;
+	case VAR_VOID:
+	    emsg(_(e_cannot_use_void_value));
+	    break;
 	case VAR_UNKNOWN:
 	case VAR_ANY:
 	    internal_error_no_abort("copy_tv(UNKNOWN)");
diff --git a/src/version.c b/src/version.c
index caba20a..67330fc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3007,
+/**/
     3006,
 /**/
     3005,