diff --git a/source/libublsettingsui-gtk3.c b/source/libublsettingsui-gtk3.c
index 85317b5..a750990 100644
--- a/source/libublsettingsui-gtk3.c
+++ b/source/libublsettingsui-gtk3.c
@@ -5,6 +5,13 @@ template_app_info template_app_information;
 
 static char *__yon_config_mode=NULL;
 
+char *yon_char_get_localised_from_lib(char *string){
+    textdomain(template_ui_LocaleName);
+    char *ret = _(string);
+    textdomain(template_app_information.app_locale);
+    return ret;
+}
+
 char *yon_ubl_save_mode_get_icon_name(SAVE_MODE_TYPE type){
     switch (type){
         case SAVE_MODE_FULL:
@@ -555,19 +562,42 @@ void yon_on_path_check(GtkEntry *self,GdkEventFocus *event,GtkContainer *status)
 
 }
 
+char *yon_gtk_entry_check_restricted(GtkEntry *target){
+    GtkInputPurpose purpose = gtk_entry_get_input_purpose(target);
+    const char *text = gtk_entry_get_text(target);
+    char *error=NULL;
+    switch(purpose){
+        case GTK_INPUT_PURPOSE_EMAIL:{
+            if (!strstr(text,"@")){
+                error = yon_char_get_localised_from_lib(EMAIL_INVALID_LABEL);
+            }
+        }
+        break;
+        case GTK_INPUT_PURPOSE_URL:{
+            if (!strstr(text,"/")){
+                error = yon_char_get_localised_from_lib(PATH_INVALID_LABEL);
+            }
+        }
+        break;
+        default: break;
+    }
+    return error;
+}
+
 void yon_entry_set_entry_type(GtkEntry *target,GtkBox *status){
     GtkInputPurpose purpose = gtk_entry_get_input_purpose(target);
     switch(purpose){
         case GTK_INPUT_PURPOSE_EMAIL:
-            g_signal_connect(G_OBJECT(target),"insert-text",G_CALLBACK(yon_on_digit_only_changed),NULL);
+            yon_gtk_entry_block_restricted_symbols(target);
+
         break;
         case GTK_INPUT_PURPOSE_DIGITS:
             g_signal_connect(G_OBJECT(target),"insert-text",G_CALLBACK(yon_on_digit_only_changed),NULL);
 
         break;
         case GTK_INPUT_PURPOSE_URL:
+            yon_gtk_entry_block_restricted_symbols(target);
 
-            g_signal_connect(G_OBJECT(target),"insert-text",G_CALLBACK(yon_on_digit_only_changed),NULL);
         break;
         default: break;
 
diff --git a/source/libublsettingsui-gtk3.h b/source/libublsettingsui-gtk3.h
index 49b9aaf..a1b8fee 100644
--- a/source/libublsettingsui-gtk3.h
+++ b/source/libublsettingsui-gtk3.h
@@ -46,6 +46,8 @@ typedef enum SAVE_MODE_TYPE {
     SAVE_MODE_HDD_HOME,
 } SAVE_MODE_TYPE;
 
+char *yon_char_get_localised_from_lib(char *string);
+
 char *yon_ubl_save_mode_get_icon_name(SAVE_MODE_TYPE type);
 
 SAVE_MODE_TYPE yon_ubl_save_mode_get_type(char *type);
@@ -265,6 +267,8 @@ void *yon_ubl_settings_window_get(char *id);
 void yon_configuration_window_add_boolean_parameter(enum CONFIGURATION_PARAMETER_TYPE type, char *id, char *label);
 void yon_configuration_window_add_combo_box_parameter(enum CONFIGURATION_PARAMETER_TYPE type, char *id, char *label, GCallback func, gpointer data, ...);
 
+char *yon_gtk_entry_check_restricted(GtkEntry *target);
+
 typedef struct {
     GtkWidget *window;
     GtkWidget *WorkZoneBox;