diff --git a/src/app/ogr/qgsnewogrconnection.cpp b/src/app/ogr/qgsnewogrconnection.cpp
index 98167cac5dda..5650e785b5c8 100644
--- a/src/app/ogr/qgsnewogrconnection.cpp
+++ b/src/app/ogr/qgsnewogrconnection.cpp
@@ -63,10 +63,10 @@ QgsNewOgrConnection::QgsNewOgrConnection( QWidget *parent, const QString &connTy
     }
     cmbDatabaseTypes->setCurrentIndex( cmbDatabaseTypes->findText( connType ) );
     txtName->setText( connName );
-    txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
     txtName->setEnabled( false );
     cmbDatabaseTypes->setEnabled( false );
   }
+  txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
 }
 
 QgsNewOgrConnection::~QgsNewOgrConnection()
diff --git a/src/providers/db2/qgsdb2newconnection.cpp b/src/providers/db2/qgsdb2newconnection.cpp
index 09d02c13e3ec..45c839fc8c56 100644
--- a/src/providers/db2/qgsdb2newconnection.cpp
+++ b/src/providers/db2/qgsdb2newconnection.cpp
@@ -72,8 +72,8 @@ QgsDb2NewConnection::QgsDb2NewConnection( QWidget *parent, const QString &connNa
     }
 
     txtName->setText( connName );
-    txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
   }
+  txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
 }
 
 //! Autoconnected SLOTS *
diff --git a/src/providers/mssql/qgsmssqlnewconnection.cpp b/src/providers/mssql/qgsmssqlnewconnection.cpp
index a5c4d908a8cb..4bf6c6eb660e 100644
--- a/src/providers/mssql/qgsmssqlnewconnection.cpp
+++ b/src/providers/mssql/qgsmssqlnewconnection.cpp
@@ -63,8 +63,8 @@ QgsMssqlNewConnection::QgsMssqlNewConnection( QWidget *parent, const QString &co
     }
 
     txtName->setText( connName );
-    txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
   }
+  txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
   on_cb_trustedConnection_clicked();
 }
 //! Autoconnected SLOTS *
diff --git a/src/providers/oracle/qgsoraclenewconnection.cpp b/src/providers/oracle/qgsoraclenewconnection.cpp
index 22456567e19c..a027220550fa 100644
--- a/src/providers/oracle/qgsoraclenewconnection.cpp
+++ b/src/providers/oracle/qgsoraclenewconnection.cpp
@@ -80,8 +80,8 @@ QgsOracleNewConnection::QgsOracleNewConnection( QWidget *parent, const QString &
     }
 
     txtName->setText( connName );
-    txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
   }
+  txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
 }
 //! Autoconnected SLOTS *
 void QgsOracleNewConnection::accept()
diff --git a/src/providers/postgres/qgspgnewconnection.cpp b/src/providers/postgres/qgspgnewconnection.cpp
index 412eb1e4643c..0f658daae5eb 100644
--- a/src/providers/postgres/qgspgnewconnection.cpp
+++ b/src/providers/postgres/qgspgnewconnection.cpp
@@ -102,8 +102,8 @@ QgsPgNewConnection::QgsPgNewConnection( QWidget *parent, const QString &connName
     }
 
     txtName->setText( connName );
-    txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
   }
+  txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]*" ), txtName ) );
 }
 
 QgsPgNewConnection::~QgsPgNewConnection()