diff --git a/src/desktoputil.cpp b/src/desktoputil.cpp
index efc1aa906..24e95e816 100644
--- a/src/desktoputil.cpp
+++ b/src/desktoputil.cpp
@@ -22,6 +22,7 @@
 #include <QDesktopServices>
 #include <QFileInfo>
 #include <QProcess>
+#include <QRegularExpression>
 #include <QSet>
 #include <QSettings>
 #include <QUrl>
@@ -33,11 +34,12 @@
 #ifdef Q_OS_WIN
 QString defaultBrowser()
 {
-    QSettings settings("HKEY_CLASSES_ROOT\\HTTP\\shell\\open\\command", QSettings::NativeFormat);
-    QString   command = settings.value(".").toString();
-    QRegularExpression   rx("\"(.+)\"");
-    if (rx.indexIn(command) != -1)
-        return rx.capturedTexts()[1];
+    QSettings          settings("HKEY_CLASSES_ROOT\\HTTP\\shell\\open\\command", QSettings::NativeFormat);
+    QString            command = settings.value(".").toString();
+    QRegularExpression rx("\"(.+)\"");
+    auto               match = rx.match(command);
+    if (match.hasMatch())
+        return match.capturedTexts()[1];
     return command;
 }
 #endif
diff --git a/src/libpsi/tools/spellchecker/spellhighlighter.cpp b/src/libpsi/tools/spellchecker/spellhighlighter.cpp
index 89e5b4409..f4d1eed56 100644
--- a/src/libpsi/tools/spellchecker/spellhighlighter.cpp
+++ b/src/libpsi/tools/spellchecker/spellhighlighter.cpp
@@ -2,6 +2,7 @@
 
 #include "common.h"
 #include "spellchecker.h"
+#include <QRegularExpression>
 
 SpellHighlighter::SpellHighlighter(QTextDocument *d) : QSyntaxHighlighter(d) { }
 
diff --git a/version b/version
index 908928563..f4560f2e2 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.5.1668 (2024-03-15, 65572028)
+1.5.1669 (2024-03-15, baf10a80)