diff --git a/src/core/processing/qgsprocessingparameters.cpp b/src/core/processing/qgsprocessingparameters.cpp
index 14dc921c6ff..26265c9acba 100644
--- a/src/core/processing/qgsprocessingparameters.cpp
+++ b/src/core/processing/qgsprocessingparameters.cpp
@@ -535,7 +535,7 @@ QgsRectangle QgsProcessingParameters::parameterAsExtent( const QgsProcessingPara
   if ( rectText.isEmpty() && !layer )
     return QgsRectangle();
 
-  QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?),\\s*(.*?),\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+  QRegularExpression rx( QStringLiteral( "^(.*?)\\s*,\\s*(.*?),\\s*(.*?),\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" ) );
   QRegularExpressionMatch match = rx.match( rectText );
   if ( match.hasMatch() )
   {
@@ -626,7 +626,7 @@ QgsGeometry QgsProcessingParameters::parameterAsExtentGeometry( const QgsProcess
 
   if ( !rectText.isEmpty() )
   {
-    QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?),\\s*(.*?),\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+    QRegularExpression rx( QStringLiteral( "^(.*?)\\s*,\\s*(.*?),\\s*(.*?),\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" ) );
     QRegularExpressionMatch match = rx.match( rectText );
     if ( match.hasMatch() )
     {
@@ -704,7 +704,7 @@ QgsCoordinateReferenceSystem QgsProcessingParameters::parameterAsExtentCrs( cons
     }
   }
 
-  QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?),\\s*(.*?),\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+  QRegularExpression rx( QStringLiteral( "^(.*?)\\s*,\\s*(.*?),\\s*(.*?),\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" ) );
 
   QString valueAsString = parameterAsString( definition, parameters, context );
   QRegularExpressionMatch match = rx.match( valueAsString );
@@ -762,7 +762,7 @@ QgsPointXY QgsProcessingParameters::parameterAsPoint( const QgsProcessingParamet
   if ( pointText.isEmpty() )
     return QgsPointXY();
 
-  QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+  QRegularExpression rx( QStringLiteral( "^\\s*\\(?\\s*(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*\\)?\\s*$" ) );
 
   QString valueAsString = parameterAsString( definition, parameters, context );
   QRegularExpressionMatch match = rx.match( valueAsString );
@@ -810,7 +810,7 @@ QgsCoordinateReferenceSystem QgsProcessingParameters::parameterAsPointCrs( const
     }
   }
 
-  QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+  QRegularExpression rx( QStringLiteral( "^\\s*\\(?\\s*(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*\\)?\\s*$" ) );
 
   QString valueAsString = parameterAsString( definition, parameters, context );
   QRegularExpressionMatch match = rx.match( valueAsString );
@@ -1465,7 +1465,7 @@ bool QgsProcessingParameterExtent::checkValueIsAcceptable( const QVariant &input
     return true;
   }
 
-  QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?)\\s*,\\s*(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+  QRegularExpression rx( QStringLiteral( "^(.*?)\\s*,\\s*(.*?)\\s*,\\s*(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" ) );
   QRegularExpressionMatch match = rx.match( input.toString() );
   if ( match.hasMatch() )
   {
@@ -1557,7 +1557,7 @@ bool QgsProcessingParameterPoint::checkValueIsAcceptable( const QVariant &input,
       return mFlags & FlagOptional;
   }
 
-  QRegularExpression rx( "^(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*$" );
+  QRegularExpression rx( QStringLiteral( "^\\s*\\(?\\s*(.*?)\\s*,\\s*(.*?)\\s*(?:\\[(.*)\\])?\\s*\\)?\\s*$" ) );
 
   QRegularExpressionMatch match = rx.match( input.toString() );
   if ( match.hasMatch() )
diff --git a/tests/src/analysis/testqgsprocessing.cpp b/tests/src/analysis/testqgsprocessing.cpp
index 018f665c2dd..7ce7889e321 100644
--- a/tests/src/analysis/testqgsprocessing.cpp
+++ b/tests/src/analysis/testqgsprocessing.cpp
@@ -2469,16 +2469,25 @@ void TestQgsProcessing::parameterPoint()
   QVERIFY( !def->checkValueIsAcceptable( true ) );
   QVERIFY( !def->checkValueIsAcceptable( 5 ) );
   QVERIFY( def->checkValueIsAcceptable( "1.1,2" ) );
+  QVERIFY( def->checkValueIsAcceptable( "(1.1,2)" ) );
   QVERIFY( def->checkValueIsAcceptable( "    1.1,  2  " ) );
+  QVERIFY( def->checkValueIsAcceptable( " (    1.1,  2 ) " ) );
   QVERIFY( def->checkValueIsAcceptable( "-1.1,2" ) );
   QVERIFY( def->checkValueIsAcceptable( "1.1,-2" ) );
   QVERIFY( def->checkValueIsAcceptable( "-1.1,-2" ) );
+  QVERIFY( def->checkValueIsAcceptable( "(-1.1,-2)" ) );
   QVERIFY( def->checkValueIsAcceptable( "1.1,2[EPSG:4326]" ) );
   QVERIFY( def->checkValueIsAcceptable( "1.1,2 [EPSG:4326]" ) );
+  QVERIFY( def->checkValueIsAcceptable( "(1.1,2 [EPSG:4326] )" ) );
   QVERIFY( def->checkValueIsAcceptable( "  -1.1,   -2   [EPSG:4326]    " ) );
+  QVERIFY( def->checkValueIsAcceptable( "  (  -1.1,   -2   [EPSG:4326]  )  " ) );
   QVERIFY( !def->checkValueIsAcceptable( "1.1,a" ) );
+  QVERIFY( !def->checkValueIsAcceptable( "(1.1,a)" ) );
   QVERIFY( !def->checkValueIsAcceptable( "layer12312312" ) );
+  QVERIFY( !def->checkValueIsAcceptable( "(layer12312312)" ) );
   QVERIFY( !def->checkValueIsAcceptable( "" ) );
+  QVERIFY( !def->checkValueIsAcceptable( "()" ) );
+  QVERIFY( !def->checkValueIsAcceptable( " (  ) " ) );
   QVERIFY( !def->checkValueIsAcceptable( QVariant() ) );
   QVERIFY( def->checkValueIsAcceptable( QgsPointXY( 1, 2 ) ) );
   QVERIFY( def->checkValueIsAcceptable( QgsReferencedPointXY( QgsPointXY( 1, 2 ), QgsCoordinateReferenceSystem( "EPSG:4326" ) ) ) );
@@ -2496,6 +2505,17 @@ void TestQgsProcessing::parameterPoint()
   QGSCOMPARENEAR( point.x(), 1.1, 0.001 );
   QGSCOMPARENEAR( point.y(), 2.2, 0.001 );
 
+  // with optional brackets
+  params.insert( "non_optional", QString( "(1.1,2.2)" ) );
+  point = QgsProcessingParameters::parameterAsPoint( def.get(), params, context );
+  QGSCOMPARENEAR( point.x(), 1.1, 0.001 );
+  QGSCOMPARENEAR( point.y(), 2.2, 0.001 );
+
+  params.insert( "non_optional", QString( "  (   -1.1  ,-2.2  )  " ) );
+  point = QgsProcessingParameters::parameterAsPoint( def.get(), params, context );
+  QGSCOMPARENEAR( point.x(), -1.1, 0.001 );
+  QGSCOMPARENEAR( point.y(), -2.2, 0.001 );
+
   // with CRS as string
   params.insert( "non_optional", QString( "1.1,2.2[EPSG:4326]" ) );
   QCOMPARE( QgsProcessingParameters::parameterAsPointCrs( def.get(), params, context ).authid(), QStringLiteral( "EPSG:4326" ) );
@@ -2508,12 +2528,23 @@ void TestQgsProcessing::parameterPoint()
   QGSCOMPARENEAR( point.x(), 122451, 100 );
   QGSCOMPARENEAR( point.y(), 244963, 100 );
 
+  params.insert( "non_optional", QString( "  ( 1.1,2.2   [EPSG:4326]   ) " ) );
+  QCOMPARE( QgsProcessingParameters::parameterAsPointCrs( def.get(), params, context ).authid(), QStringLiteral( "EPSG:4326" ) );
+  point = QgsProcessingParameters::parameterAsPoint( def.get(), params, context, QgsCoordinateReferenceSystem( "EPSG:3785" ) );
+  QGSCOMPARENEAR( point.x(), 122451, 100 );
+  QGSCOMPARENEAR( point.y(), 244963, 100 );
+
   // nonsense string
   params.insert( "non_optional", QString( "i'm not a crs, and nothing you can do will make me one" ) );
   point = QgsProcessingParameters::parameterAsPoint( def.get(), params, context );
   QCOMPARE( point.x(), 0.0 );
   QCOMPARE( point.y(), 0.0 );
 
+  params.insert( "non_optional", QString( "   (   )  " ) );
+  point = QgsProcessingParameters::parameterAsPoint( def.get(), params, context );
+  QCOMPARE( point.x(), 0.0 );
+  QCOMPARE( point.y(), 0.0 );
+
   // QgsPointXY
   params.insert( "non_optional", QgsPointXY( 11.1, 12.2 ) );
   point = QgsProcessingParameters::parameterAsPoint( def.get(), params, context );