diff --git a/src/widgets/widgets/qplaintextedit.cpp b/src/widgets/widgets/qplaintextedit.cpp
index 6676bb27475..839e2587a78 100644
--- a/src/widgets/widgets/qplaintextedit.cpp
+++ b/src/widgets/widgets/qplaintextedit.cpp
@@ -658,10 +658,7 @@ void QPlainTextEditPrivate::setTopBlock(int blockNumber, int lineNumber, int dx)
         lineNumber = maxTopLine - block.firstLineNumber();
     }
 
-    {
-        const QSignalBlocker blocker(vbar);
-        vbar->setValue(newTopLine);
-    }
+    vbar->setValue(newTopLine);
 
     if (!dx && blockNumber == control->topBlock && lineNumber == topLine)
         return;
@@ -677,10 +674,7 @@ void QPlainTextEditPrivate::setTopBlock(int blockNumber, int lineNumber, int dx)
         control->topBlock = blockNumber;
         topLine = lineNumber;
 
-        {
-            const QSignalBlocker blocker(vbar);
-            vbar->setValue(block.firstLineNumber() + lineNumber);
-        }
+        vbar->setValue(block.firstLineNumber() + lineNumber);
 
         if (dx || dy) {
             viewport->scroll(q->isRightToLeft() ? -dx : dx, dy);
@@ -1038,10 +1032,7 @@ void QPlainTextEditPrivate::_q_adjustScrollbars()
     if (firstVisibleBlock.isValid())
         visualTopLine = firstVisibleBlock.firstLineNumber() + topLine;
 
-    {
-        const QSignalBlocker blocker(vbar);
-        vbar->setValue(visualTopLine);
-    }
+    vbar->setValue(visualTopLine);
 
     hbar->setRange(0, (int)documentSize.width() - viewport->width());
     hbar->setPageStep(viewport->width());
diff --git a/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp b/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp
index ec695b4bc18..7b04782cf67 100644
--- a/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp
+++ b/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp
@@ -157,6 +157,7 @@ private slots:
     void appendTextWhenInvisible();
     void placeholderVisibility_data();
     void placeholderVisibility();
+    void scrollBarSignals();
 
 private:
     void createSelection();
@@ -1944,5 +1945,30 @@ void tst_QPlainTextEdit::placeholderVisibility()
     QTRY_VERIFY(plainTextEdit_d->placeholderVisible == placeholderVisible);
 }
 
+
+void tst_QPlainTextEdit::scrollBarSignals()
+{
+    QPlainTextEdit plainTextEdit;
+    QString longText;
+    for (uint i = 0; i < 500; ++i)
+        longText += "This is going to be a very long text for scroll signal testing.\n";
+    plainTextEdit.setPlainText(longText);
+    QScrollBar *vbar = plainTextEdit.verticalScrollBar();
+    plainTextEdit.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&plainTextEdit));
+    QSignalSpy spy(vbar, &QScrollBar::valueChanged);
+
+    QTest::keyClick(vbar, Qt::Key_Down);
+    QTRY_COMPARE(spy.count(), 1);
+    QTest::keyClick(vbar, Qt::Key_PageDown);
+    QTRY_COMPARE(spy.count(), 2);
+    QTest::keyClick(vbar, Qt::Key_PageDown);
+    QTRY_COMPARE(spy.count(), 3);
+    QTest::keyClick(vbar, Qt::Key_Up);
+    QTRY_COMPARE(spy.count(), 4);
+    QTest::keyClick(vbar, Qt::Key_PageUp);
+    QTRY_COMPARE(spy.count(), 5);
+}
+
 QTEST_MAIN(tst_QPlainTextEdit)
 #include "tst_qplaintextedit.moc"