diff --git a/src/providers/wms/qgswmscapabilities.cpp b/src/providers/wms/qgswmscapabilities.cpp
index 29824dd50cda..6e77c572f7ec 100644
--- a/src/providers/wms/qgswmscapabilities.cpp
+++ b/src/providers/wms/qgswmscapabilities.cpp
@@ -2344,8 +2344,7 @@ bool QgsWmsCapabilitiesDownload::downloadCapabilities()
   mIsAborted = false;
 
   QString url = mBaseUrl;
-  if ( !url.contains( QLatin1String( "SERVICE=WMTS" ), Qt::CaseInsensitive ) &&
-       !url.contains( QLatin1String( "/WMTSCapabilities.xml" ), Qt::CaseInsensitive ) )
+  if ( !QgsWmsProvider::isUrlForWMTS( url ) )
   {
     url += QLatin1String( "SERVICE=WMS&REQUEST=GetCapabilities" );
   }
diff --git a/src/providers/wms/qgswmsprovider.cpp b/src/providers/wms/qgswmsprovider.cpp
index 02bc7d9e765d..0a694faac389 100644
--- a/src/providers/wms/qgswmsprovider.cpp
+++ b/src/providers/wms/qgswmsprovider.cpp
@@ -197,7 +197,7 @@ QString QgsWmsProvider::prepareUri( QString uri )
   // some services provide a percent/url encoded (legend) uri string, always decode here
   uri = QUrl::fromPercentEncoding( uri.toUtf8() );
 
-  if ( uri.contains( QLatin1String( "SERVICE=WMTS" ) ) || uri.contains( QLatin1String( "/WMTSCapabilities.xml" ) ) )
+  if ( isUrlForWMTS( uri ) )
   {
     return uri;
   }
@@ -3652,7 +3652,7 @@ QUrl QgsWmsProvider::getLegendGraphicFullURL( double scale, const QgsRectangle &
   QUrl url( lurl );
   QUrlQuery query( url );
 
-  if ( dataSourceUri().contains( "SERVICE=WMTS" ) || dataSourceUri().contains( "/WMTSCapabilities.xml" ) )
+  if ( isUrlForWMTS( dataSourceUri() ) )
   {
     QgsDebugMsg( QString( "getlegendgraphicrequest: %1" ).arg( url.toString() ) );
     return url;
@@ -3865,6 +3865,14 @@ void QgsWmsProvider::getLegendGraphicReplyProgress( qint64 bytesReceived, qint64
   emit statusChanged( msg );
 }
 
+bool QgsWmsProvider::isUrlForWMTS( const QString &url )
+{
+  // Do comparison in case insensitive way to match OGC KVP requirements
+  return  url.contains( QLatin1String( "SERVICE=WMTS" ), Qt::CaseInsensitive ) ||
+          url.contains( QLatin1String( "/WMTSCapabilities.xml" ), Qt::CaseInsensitive );
+}
+
+
 QgsWmsProvider *QgsWmsProviderMetadata::createProvider( const QString &uri, const QgsDataProvider::ProviderOptions &options )
 {
   return new QgsWmsProvider( uri, options );
diff --git a/src/providers/wms/qgswmsprovider.h b/src/providers/wms/qgswmsprovider.h
index db1865dce721..c6f8cfc5cb52 100644
--- a/src/providers/wms/qgswmsprovider.h
+++ b/src/providers/wms/qgswmsprovider.h
@@ -261,6 +261,8 @@ class QgsWmsProvider final: public QgsRasterDataProvider
     } TilePosition;
     typedef QList<TilePosition> TilePositions;
 
+    static bool isUrlForWMTS( const QString &url );
+
   private slots:
     void identifyReplyFinished();
     void getLegendGraphicReplyFinished( const QImage & );