diff --git a/nw/__init__.py b/nw/__init__.py
index 54ccd759..6d53ead4 100644
--- a/nw/__init__.py
+++ b/nw/__init__.py
@@ -221,14 +221,14 @@ def main(sysArgs=None):
             "At least Python 3.6.0 is required, found %s." % CONFIG.verPyString
         )
         errorCode |= 4
-    if CONFIG.verQtValue < 50200:
+    if CONFIG.verQtValue < 50300:
         errorData.append(
-            "At least Qt5 version 5.2 is required, found %s." % CONFIG.verQtString
+            "At least Qt5 version 5.3 is required, found %s." % CONFIG.verQtString
         )
         errorCode |= 8
-    if CONFIG.verPyQtValue < 50200:
+    if CONFIG.verPyQtValue < 50300:
         errorData.append(
-            "At least PyQt5 version 5.2 is required, found %s." % CONFIG.verPyQtString
+            "At least PyQt5 version 5.3 is required, found %s." % CONFIG.verPyQtString
         )
         errorCode |= 16
 
diff --git a/nw/gui/doceditor.py b/nw/gui/doceditor.py
index 9f4949a4..f5269769 100644
--- a/nw/gui/doceditor.py
+++ b/nw/gui/doceditor.py
@@ -2050,7 +2050,7 @@ class GuiDocEditSearch(QFrame):
                 self._alertSearchValid(theRegEx.isValid())
                 return theRegEx
 
-            elif self.mainConf.verQtValue >= 50300:
+            else: # >= 50300 to < 51300
                 if self.isCaseSense:
                     rxOpt = Qt.CaseSensitive
                 else: