diff --git a/src/sql/kernel/qsqlindex.cpp b/src/sql/kernel/qsqlindex.cpp
index 63fbb198b11..45dc64f04b7 100644
--- a/src/sql/kernel/qsqlindex.cpp
+++ b/src/sql/kernel/qsqlindex.cpp
@@ -147,24 +147,6 @@ void QSqlIndex::setDescending(int i, bool desc)
         sorts[i] = desc;
 }
 
-/*! \internal
-
-  Creates a string representing the field number \a i using prefix \a
-  prefix. If \a verbose is true, ASC or DESC is included in the field
-  description if the field is sorted in ASCending or DESCending order.
-*/
-
-QString QSqlIndex::createField(int i, const QString& prefix, bool verbose) const
-{
-    QString f;
-    if (!prefix.isEmpty())
-        f += prefix + u'.';
-    f += field(i).name();
-    if (verbose)
-        f += u' ' + QString((isDescending(i) ? "DESC"_L1 : "ASC"_L1));
-    return f;
-}
-
 /*!
     \fn QString QSqlIndex::cursorName() const
 
diff --git a/src/sql/kernel/qsqlindex.h b/src/sql/kernel/qsqlindex.h
index f011e643534..2c694da075f 100644
--- a/src/sql/kernel/qsqlindex.h
+++ b/src/sql/kernel/qsqlindex.h
@@ -41,7 +41,6 @@ public:
     void setDescending(int i, bool desc);
 
 private:
-    QString createField(int i, const QString& prefix, bool verbose) const;
     // ### Qt7: move to d-ptr
     QString cursor;
     QString nm;