diff --git a/src/dict/bgl.cc b/src/dict/bgl.cc
index 97cb29d7..f2d7d161 100644
--- a/src/dict/bgl.cc
+++ b/src/dict/bgl.cc
@@ -32,12 +32,6 @@
 #include <QSemaphore>
 #include <QThreadPool>
 
-#if ( QT_VERSION >= QT_VERSION_CHECK( 6, 0, 0 ) )
-  #include <QtCore5Compat/QRegExp>
-#else
-  #include <QRegExp>
-#endif
-
 namespace Bgl {
 
 using std::map;
diff --git a/src/dict/slob.cc b/src/dict/slob.cc
index 6287c976..e471b69a 100644
--- a/src/dict/slob.cc
+++ b/src/dict/slob.cc
@@ -28,10 +28,6 @@
 #include <QTextCodec>
 #include <QMap>
 #include <QPair>
-#include <QRegExp>
-#if ( QT_VERSION >= QT_VERSION_CHECK( 6, 0, 0 ) )
-  #include <QtCore5Compat>
-#endif
 #include <QProcess>
 #include <QVector>
 
@@ -792,7 +788,7 @@ string SlobDictionary::convert( const string & in, RefEntry const & entry )
     pos = match.capturedEnd();
 
     QStringList list = match.capturedTexts();
-    // Add empty strings for compatibility with QRegExp behaviour
+    // Add empty strings for compatibility with regex behaviour
     for ( int i = match.lastCapturedIndex() + 1; i < 5; i++ )
       list.append( QString() );
 
diff --git a/src/dict/zim.cc b/src/dict/zim.cc
index 5f5ef0c8..834b933a 100644
--- a/src/dict/zim.cc
+++ b/src/dict/zim.cc
@@ -388,7 +388,7 @@ string ZimDictionary::convert( const string & in )
     pos = match.capturedEnd();
 
     QStringList list = match.capturedTexts();
-    // Add empty strings for compatibility with QRegExp behaviour
+    // Add empty strings for compatibility with regex behaviour
     for ( int i = list.size(); i < 5; i++ )
       list.append( QString() );
 
@@ -435,7 +435,7 @@ string ZimDictionary::convert( const string & in )
     pos = match.capturedEnd();
 
     QStringList list = match.capturedTexts();
-    // Add empty strings for compatibility with QRegExp behaviour
+    // Add empty strings for compatibility with regex behaviour
     for ( int i = match.lastCapturedIndex() + 1; i < 3; i++ )
       list.append( QString() );