diff --git a/src/corelib/itemmodels/qsortfilterproxymodel.cpp b/src/corelib/itemmodels/qsortfilterproxymodel.cpp
index 6b59b0723b7..31b9bbc990b 100644
--- a/src/corelib/itemmodels/qsortfilterproxymodel.cpp
+++ b/src/corelib/itemmodels/qsortfilterproxymodel.cpp
@@ -43,7 +43,6 @@
 #include <qdebug.h>
 #include <qdatetime.h>
 #include <qpair.h>
-#include <qregularexpression.h>
 #include <qstringlist.h>
 #include <private/qabstractitemmodel_p.h>
 #include <private/qabstractproxymodel_p.h>
diff --git a/src/corelib/itemmodels/qsortfilterproxymodel.h b/src/corelib/itemmodels/qsortfilterproxymodel.h
index 0b7c69f37dc..1304a95d13f 100644
--- a/src/corelib/itemmodels/qsortfilterproxymodel.h
+++ b/src/corelib/itemmodels/qsortfilterproxymodel.h
@@ -42,7 +42,10 @@
 
 #include <QtCore/qabstractproxymodel.h>
 #include <QtCore/qregexp.h>
-#include <QtCore/qregularexpression.h>
+
+#if QT_CONFIG(regularexpression)
+# include <QtCore/qregularexpression.h>
+#endif
 
 QT_REQUIRE_CONFIG(sortfilterproxymodel);
 
@@ -87,8 +90,10 @@ public:
     QRegExp filterRegExp() const;
     void setFilterRegExp(const QRegExp &regExp);
 
+#if QT_CONFIG(regularexpression)
     QRegularExpression filterRegularExpression() const;
     void setFilterRegularExpression(const QRegularExpression &regularExpression);
+#endif
 
     int filterKeyColumn() const;
     void setFilterKeyColumn(int column);