diff --git a/pagetop/src/config.rs b/pagetop/src/config.rs
index cd874295..99e1c60d 100644
--- a/pagetop/src/config.rs
+++ b/pagetop/src/config.rs
@@ -125,10 +125,11 @@ mod path;
 mod source;
 mod value;
 
-use crate::concat_string;
 use crate::config::data::ConfigData;
 use crate::config::file::File;
 
+use concat_string::concat_string;
+
 use std::sync::LazyLock;
 
 use std::env;
diff --git a/pagetop/src/core/component/context.rs b/pagetop/src/core/component/context.rs
index e0529e61..e5d7f196 100644
--- a/pagetop/src/core/component/context.rs
+++ b/pagetop/src/core/component/context.rs
@@ -1,4 +1,3 @@
-use crate::concat_string;
 use crate::core::component::ChildOp;
 use crate::core::layout::all::{layout_by_short_name, DEFAULT_LAYOUT};
 use crate::core::layout::{ChildrenInRegions, LayoutRef};
@@ -8,6 +7,8 @@ use crate::locale::{LanguageIdentifier, DEFAULT_LANGID};
 use crate::service::HttpRequest;
 use crate::util::TypeInfo;
 
+use concat_string::concat_string;
+
 use std::collections::HashMap;
 use std::error::Error;
 use std::str::FromStr;
diff --git a/pagetop/src/html/assets/javascript.rs b/pagetop/src/html/assets/javascript.rs
index 76d84673..15c38c5f 100644
--- a/pagetop/src/html/assets/javascript.rs
+++ b/pagetop/src/html/assets/javascript.rs
@@ -1,6 +1,8 @@
 use crate::html::assets::AssetsTrait;
 use crate::html::{html, Markup};
-use crate::{concat_string, AutoDefault, Weight};
+use crate::{AutoDefault, Weight};
+
+use concat_string::concat_string;
 
 #[derive(AutoDefault)]
 enum Source {
diff --git a/pagetop/src/html/assets/stylesheet.rs b/pagetop/src/html/assets/stylesheet.rs
index 5dd65a97..09a0e96d 100644
--- a/pagetop/src/html/assets/stylesheet.rs
+++ b/pagetop/src/html/assets/stylesheet.rs
@@ -1,6 +1,8 @@
 use crate::html::assets::AssetsTrait;
 use crate::html::{html, Markup, PreEscaped};
-use crate::{concat_string, AutoDefault, Weight};
+use crate::{AutoDefault, Weight};
+
+use concat_string::concat_string;
 
 #[derive(AutoDefault)]
 enum Source {
diff --git a/pagetop/src/lib.rs b/pagetop/src/lib.rs
index 9f1a4aa7..0f1db2e0 100644
--- a/pagetop/src/lib.rs
+++ b/pagetop/src/lib.rs
@@ -83,12 +83,6 @@
 
 // RE-EXPORTED *************************************************************************************
 
-// Concatena una serie de fragmentos de cadena en una cadena propia.
-pub use concat_string::concat_string;
-
-/// Concatenación flexible de identificadores en macros.
-pub use paste::paste;
-
 pub use pagetop_macros::{fn_builder, html, main, test, AutoDefault, ComponentClasses};
 
 pub type StaticResources = std::collections::HashMap<&'static str, static_files::Resource>;
diff --git a/pagetop/src/prelude.rs b/pagetop/src/prelude.rs
index 6768849d..4a6f67d7 100644
--- a/pagetop/src/prelude.rs
+++ b/pagetop/src/prelude.rs
@@ -2,7 +2,7 @@
 
 // RE-EXPORTED.
 
-pub use crate::{concat_string, fn_builder, html, main, paste, test};
+pub use crate::{fn_builder, html, main, test};
 
 pub use crate::{AutoDefault, ComponentClasses, StaticResources, UniqueId, Weight};
 
diff --git a/pagetop/src/service.rs b/pagetop/src/service.rs
index 26811917..fa02ba11 100644
--- a/pagetop/src/service.rs
+++ b/pagetop/src/service.rs
@@ -15,14 +15,14 @@ pub use actix_web_static_files::ResourceFiles;
 #[macro_export]
 macro_rules! include_files {
     ( $bundle:ident ) => {
-        $crate::paste! {
+        $crate::util::paste! {
             mod [<static_files_ $bundle>] {
                 include!(concat!(env!("OUT_DIR"), "/", stringify!($bundle), ".rs"));
             }
         }
     };
     ( $STATIC:ident => $bundle:ident ) => {
-        $crate::paste! {
+        $crate::util::paste! {
             mod [<static_files_ $bundle>] {
                 include!(concat!(env!("OUT_DIR"), "/", stringify!($bundle), ".rs"));
             }
@@ -36,7 +36,7 @@ macro_rules! include_files {
 #[macro_export]
 macro_rules! include_files_service {
     ( $scfg:ident, $bundle:ident => $path:expr $(, [$root:expr, $relative:expr])? ) => {{
-        $crate::paste! {
+        $crate::util::paste! {
             let span = $crate::trace::debug_span!("Configuring static files ", path = $path);
             let _ = span.in_scope(|| {
                 #[allow(unused_mut)]
diff --git a/pagetop/src/util.rs b/pagetop/src/util.rs
index abe16549..610a5e0f 100644
--- a/pagetop/src/util.rs
+++ b/pagetop/src/util.rs
@@ -140,6 +140,9 @@ pub fn absolute_dir(
 
 // USEFUL MACROS ***********************************************************************************
 
+/// Flexible concatenation of identifiers in macros.
+pub use paste::paste;
+
 #[macro_export]
 /// Macro para construir grupos de pares clave-valor.
 ///