diff --git a/models/repo/repo_unit.go b/models/repo/repo_unit.go
index c11ad70627..e50f79e945 100644
--- a/models/repo/repo_unit.go
+++ b/models/repo/repo_unit.go
@@ -41,27 +41,30 @@ func (err ErrUnitTypeNotExist) Unwrap() error {
 }
 
 // RepoUnitAccessMode specifies the users access mode to a repo unit
+// Only UnitAccessModeWrite is used by the wiki, to mark it as instance-writable
 type UnitAccessMode int
 
 const (
 	// UnitAccessModeUnset - no unit mode set
 	UnitAccessModeUnset UnitAccessMode = iota // 0
+
 	// UnitAccessModeNone no access
-	UnitAccessModeNone // 1
+	// UnitAccessModeNone UnitAccessMode = 1
 	// UnitAccessModeRead read access
-	UnitAccessModeRead // 2
+	// UnitAccessModeRead UnitAccessMode = 2
+
 	// UnitAccessModeWrite write access
-	UnitAccessModeWrite // 3
+	UnitAccessModeWrite UnitAccessMode = 3
 )
 
 func (mode UnitAccessMode) ToAccessMode(modeIfUnset perm.AccessMode) perm.AccessMode {
 	switch mode {
 	case UnitAccessModeUnset:
 		return modeIfUnset
-	case UnitAccessModeNone:
-		return perm.AccessModeNone
-	case UnitAccessModeRead:
-		return perm.AccessModeRead
+	// case UnitAccessModeNone:
+	//	return perm.AccessModeNone
+	// case UnitAccessModeRead:
+	//	return perm.AccessModeRead
 	case UnitAccessModeWrite:
 		return perm.AccessModeWrite
 	default:
diff --git a/models/repo/repo_unit_test.go b/models/repo/repo_unit_test.go
index 210b830d02..b706c9a550 100644
--- a/models/repo/repo_unit_test.go
+++ b/models/repo/repo_unit_test.go
@@ -34,8 +34,8 @@ func TestActionsConfig(t *testing.T) {
 }
 
 func TestRepoUnitAccessMode(t *testing.T) {
-	assert.Equal(t, perm.AccessModeNone, UnitAccessModeNone.ToAccessMode(perm.AccessModeAdmin))
-	assert.Equal(t, perm.AccessModeRead, UnitAccessModeRead.ToAccessMode(perm.AccessModeAdmin))
+	// assert.Equal(t, perm.AccessModeNone, UnitAccessModeNone.ToAccessMode(perm.AccessModeAdmin))
+	// assert.Equal(t, perm.AccessModeRead, UnitAccessModeRead.ToAccessMode(perm.AccessModeAdmin))
 	assert.Equal(t, perm.AccessModeWrite, UnitAccessModeWrite.ToAccessMode(perm.AccessModeAdmin))
 	assert.Equal(t, perm.AccessModeRead, UnitAccessModeUnset.ToAccessMode(perm.AccessModeRead))
 }
diff --git a/routers/api/v1/repo/repo.go b/routers/api/v1/repo/repo.go
index e8c3965ff3..5ade81e393 100644
--- a/routers/api/v1/repo/repo.go
+++ b/routers/api/v1/repo/repo.go
@@ -861,7 +861,7 @@ func updateRepoUnits(ctx *context.APIContext, owner string, repo *repo_model.Rep
 			if *opts.GloballyEditableWiki {
 				wikiPermissions = repo_model.UnitAccessModeWrite
 			} else {
-				wikiPermissions = repo_model.UnitAccessModeRead
+				wikiPermissions = repo_model.UnitAccessModeUnset
 			}
 		}