diff --git a/internal/services/postgres/postgresql_flexible_server_resource.go b/internal/services/postgres/postgresql_flexible_server_resource.go
index 6182127be373..e77c571b673e 100644
--- a/internal/services/postgres/postgresql_flexible_server_resource.go
+++ b/internal/services/postgres/postgresql_flexible_server_resource.go
@@ -335,7 +335,6 @@ func resourcePostgresqlFlexibleServer() *pluginsdk.Resource {
 		},
 
 		CustomizeDiff: pluginsdk.CustomDiffWithAll(func(ctx context.Context, d *pluginsdk.ResourceDiff, v interface{}) error {
-
 			// as create_mode should never change after creation, we can ignore it when checking for version changes
 			if d.HasChange("version") {
 				oldVersionVal, newVersionVal := d.GetChange("version")
@@ -350,7 +349,7 @@ func resourcePostgresqlFlexibleServer() *pluginsdk.Resource {
 
 			if d.HasChange("create_mode") {
 				// if create_mode is set to `Update`, then we can update it rather than force new
-				if d.Get("create_mode").(string) != string(servers.CreateModeForUpdateUpdate) {
+				if d.Get("create_mode").(string) == string(servers.CreateModeForUpdateUpdate) {
 					return nil
 				}
 				d.ForceNew("create_mode")