diff --git a/ChangeLog b/ChangeLog
index 00cf7b90..94151afa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -25048,3 +25048,7 @@
 	'DISTRO SPECIFIC NOTES' section of 'INSTALL'.
 2025-04-28 Fred Gleason <fredg@paravelsystems.com>
 	* Cleaned up numerous 'no such signal' runtime errors.
+2025-04-28 Fred Gleason <fredg@paravelsystems.com>
+	* Modified validator for new scheduler codes to use
+	'QRegularExpressionValidator' in the 'Add Scheduler Code' dialog
+	in rdadmin(1).
diff --git a/rdadmin/add_schedcodes.cpp b/rdadmin/add_schedcodes.cpp
index 3273e554..6560e706 100644
--- a/rdadmin/add_schedcodes.cpp
+++ b/rdadmin/add_schedcodes.cpp
@@ -21,7 +21,7 @@
 
 #include <QMessageBox>
 #include <QPushButton>
-//#include <QRegExpValidator>
+#include <QRegularExpressionValidator>
 
 #include <rddb.h>
 #include <rdescape_string.h>
@@ -45,11 +45,12 @@ AddSchedCode::AddSchedCode(QWidget *parent)
   //
   d_code_edit=new QLineEdit(this);
   d_code_edit->setMaxLength(10);
-  /*
-  QRegExpValidator *code_validator=
-    new QRegExpValidator(QRegExp("[a-z0-9 ]{1,10}",Qt::CaseInsensitive),this);
+  QRegularExpressionValidator *code_validator=
+    new QRegularExpressionValidator(QRegularExpression("[-_a-z0-9 ]{1,10}",
+			      QRegularExpression::CaseInsensitiveOption),this);
+  //    new QRegularExpressionValidator(QRegularExpression("[a-z0-9 ]{1,10}",
+  //			      QRegularExpression::CaseInsensitiveOption),this);
   d_code_edit->setValidator(code_validator);
-  */
   connect(d_code_edit,SIGNAL(textChanged(const QString &)),
 	  this,SLOT(codeChangedData(const QString &)));
   d_code_label=new QLabel(tr("New Code:"),this);