diff --git a/novelwriter/core/coretools.py b/novelwriter/core/coretools.py
index 925db901..8b29bf39 100644
--- a/novelwriter/core/coretools.py
+++ b/novelwriter/core/coretools.py
@@ -370,17 +370,7 @@ class DocSearch:
     def _buildPattern(self, search: str) -> str:
         """Build the search pattern string."""
         if self._escape:
-            if CONFIG.verQtValue >= 0x050f00:
-                search = QRegularExpression.escape(search)
-            else:
-                # For older Qt versions, we escape manually
-                escaped = ""
-                for c in search:
-                    if c.isalnum() or c == "_":
-                        escaped += c
-                    else:
-                        escaped += f"\\{c}"
-                search = escaped
+            search = QRegularExpression.escape(search)
         if self._words:
             search = f"(?:^|\\b){search}(?:$|\\b)"
         return search
diff --git a/novelwriter/gui/doceditor.py b/novelwriter/gui/doceditor.py
index 4d603289..bb09e72f 100644
--- a/novelwriter/gui/doceditor.py
+++ b/novelwriter/gui/doceditor.py
@@ -39,8 +39,8 @@ from time import time
 from typing import TYPE_CHECKING
 
 from PyQt5.QtCore import (
-    pyqtSignal, pyqtSlot, QObject, QPoint, QRegExp, QRegularExpression,
-    QRunnable, Qt, QTimer
+    pyqtSignal, pyqtSlot, QObject, QPoint, QRegularExpression, QRunnable, Qt,
+    QTimer
 )
 from PyQt5.QtGui import (
     QColor, QCursor, QFont, QKeyEvent, QKeySequence, QMouseEvent, QPalette,
@@ -2538,32 +2538,18 @@ class GuiDocEditSearch(QFrame):
     #  Getters
     ##
 
-    def getSearchObject(self) -> str | QRegularExpression | QRegExp:
+    def getSearchObject(self) -> str | QRegularExpression:
         """Return the current search text either as text or as a regular
         expression object.
         """
         text = self.searchBox.text()
         if CONFIG.searchRegEx:
-            # Using the Unicode-capable QRegularExpression class was
-            # only added in Qt 5.13. Otherwise, 5.3 and up supports
-            # only the QRegExp class.
-            if CONFIG.verQtValue >= 0x050d00:
-                rxOpt = QRegularExpression.PatternOption.UseUnicodePropertiesOption
-                if not CONFIG.searchCase:
-                    rxOpt |= QRegularExpression.PatternOption.CaseInsensitiveOption
-                regEx = QRegularExpression(text, rxOpt)
-                self._alertSearchValid(regEx.isValid())
-                return regEx
-            else:  # pragma: no cover
-                # >= 50300 to < 51300
-                if CONFIG.searchCase:
-                    rxOpt = Qt.CaseSensitivity.CaseSensitive
-                else:
-                    rxOpt = Qt.CaseSensitivity.CaseInsensitive
-                regEx = QRegExp(text, rxOpt)
-                self._alertSearchValid(regEx.isValid())
-                return regEx
-
+            rxOpt = QRegularExpression.PatternOption.UseUnicodePropertiesOption
+            if not CONFIG.searchCase:
+                rxOpt |= QRegularExpression.PatternOption.CaseInsensitiveOption
+            regEx = QRegularExpression(text, rxOpt)
+            self._alertSearchValid(regEx.isValid())
+            return regEx
         return text
 
     ##
diff --git a/novelwriter/gui/docviewerpanel.py b/novelwriter/gui/docviewerpanel.py
index ed4d9ba6..b82c5d52 100644
--- a/novelwriter/gui/docviewerpanel.py
+++ b/novelwriter/gui/docviewerpanel.py
@@ -209,9 +209,8 @@ class GuiDocViewerPanel(QWidget):
 
     def _updateTabVisibility(self) -> None:
         """Hide class tabs with no content."""
-        if CONFIG.verQtValue >= 0x050f00:
-            for tClass, cTab in self.kwTabs.items():
-                self.mainTabs.setTabVisible(self.idTabs[tClass], cTab.countEntries() > 0)
+        for tClass, cTab in self.kwTabs.items():
+            self.mainTabs.setTabVisible(self.idTabs[tClass], cTab.countEntries() > 0)
         return
 
     def _loadAllTags(self) -> None:
diff --git a/tests/test_core/test_core_coretools.py b/tests/test_core/test_core_coretools.py
index 7c68bb7d..0dd0f113 100644
--- a/tests/test_core/test_core_coretools.py
+++ b/tests/test_core/test_core_coretools.py
@@ -427,14 +427,7 @@ def testCoreTools_DocSearch(monkeypatch, mockGUI, fncPath, mockRnd, ipsumText):
     # ========
 
     # Escape Using QRegularExpression
-    with monkeypatch.context() as mp:
-        mp.setattr(CONFIG, "verQtValue", 0x050f00)
-        assert search._buildPattern("[A-Za-z0-9_]+") == r"\[A\-Za\-z0\-9_\]\+"
-
-    # Escape Using Custom Implementation
-    with monkeypatch.context() as mp:
-        mp.setattr(CONFIG, "verQtValue", 0x050d00)
-        assert search._buildPattern("[A-Za-z0-9_]+") == r"\[A\-Za\-z0\-9_\]\+"
+    assert search._buildPattern("[A-Za-z0-9_]+") == r"\[A\-Za\-z0\-9_\]\+"
 
     # Whole Words
     search.setWholeWords(True)
diff --git a/tests/test_gui/test_gui_docviewerpanel.py b/tests/test_gui/test_gui_docviewerpanel.py
index b194a52f..9b35bfe4 100644
--- a/tests/test_gui/test_gui_docviewerpanel.py
+++ b/tests/test_gui/test_gui_docviewerpanel.py
@@ -26,7 +26,7 @@ from tools import C, buildTestProject
 
 from PyQt5.QtGui import QIcon
 
-from novelwriter import CONFIG, SHARED
+from novelwriter import SHARED
 from novelwriter.constants import nwLists
 from novelwriter.core.item import NWItem
 from novelwriter.dialogs.editlabel import GuiEditLabel
@@ -151,14 +151,13 @@ def testGuiViewerPanel_Tags(qtbot, monkeypatch, caplog, nwGUI, projPath, mockRnd
     nwGUI.docEditor._processTag(cursor, create=True)
 
     # Check Panel Tab Visibility
-    if CONFIG.verQtValue >= 0x050f00:
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["CHARACTER"]) is True
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["PLOT"]) is False
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["WORLD"]) is False
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["TIMELINE"]) is False
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["OBJECT"]) is False
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["ENTITY"]) is False
-        assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["CUSTOM"]) is False
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["CHARACTER"]) is True
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["PLOT"]) is False
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["WORLD"]) is False
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["TIMELINE"]) is False
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["OBJECT"]) is False
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["ENTITY"]) is False
+    assert viewPanel.mainTabs.isTabVisible(viewPanel.idTabs["CUSTOM"]) is False
 
     # Check Character Tab
     charTab = viewPanel.kwTabs["CHARACTER"]