diff --git a/src/pimcommon/CMakeLists.txt b/src/pimcommon/CMakeLists.txt
--- a/src/pimcommon/CMakeLists.txt
+++ b/src/pimcommon/CMakeLists.txt
@@ -32,10 +32,6 @@
     )
 
 
-set(libpimcommon_sieve_SRCS
-    sievehighlighter/sievesyntaxhighlighterutil.cpp
-    )
-
 set(libpimcommon_autocorrection_SRCS
     autocorrection/autocorrection.cpp
     autocorrection/autocorrectionwidget.cpp
@@ -140,7 +136,6 @@
     ${libpimcommon_autocorrection_SRCS}
     ${libpimcommon_translator_SRCS}
     ${libpimcommon_templatewidgets_SRCS}
-    ${libpimcommon_sieve_SRCS}
     ${libpimcommon_widgets_SRCS}
     ${libpimcommon_customtools_SRCS}
     ${libpimcommon_logactivities_SRCS}
@@ -311,15 +306,6 @@
     RELATIVE customtools
     )
 
-ecm_generate_headers(PimCommon_Camelcasesievehighlighter_HEADERS
-    HEADER_NAMES
-    SieveSyntaxHighlighterUtil
-    REQUIRED_HEADERS PimCommon_sievehighlighter_HEADERS
-    PREFIX PimCommon
-    RELATIVE sievehighlighter
-    )
-
-
 ecm_generate_headers(PimCommon_Camelcasemigrate_HEADERS
     HEADER_NAMES
     MigrateApplicationFiles
@@ -407,7 +393,6 @@
     ${PimCommon_Camelcasescript_HEADERS}
     ${PimCommon_Camelcasesettings_HEADERS}
     ${PimCommon_Camelcaseshareserviceurl_HEADERS}
-    ${PimCommon_Camelcasesievehighlighter_HEADERS}
     ${PimCommon_Camelcasestorageservice_HEADERS}
     ${PimCommon_Camelcasestorageservicedialog_HEADERS}
     ${PimCommon_Camelcasestorageserviceinterface_HEADERS}
@@ -441,7 +426,6 @@
     ${PimCommon_richtexteditor_HEADERS}
     ${PimCommon_settings_HEADERS}
     ${PimCommon_shareserviceurl_HEADERS}
-    ${PimCommon_sievehighlighter_HEADERS}
     ${PimCommon_storageservice_HEADERS}
     ${PimCommon_storageservicedialog_HEADERS}
     ${PimCommon_storageserviceinterface_HEADERS}
diff --git a/src/pimcommon/sievehighlighter/sievesyntaxhighlighterutil.h b/src/pimcommon/sievehighlighter/sievesyntaxhighlighterutil.h
deleted file mode 100644
--- a/src/pimcommon/sievehighlighter/sievesyntaxhighlighterutil.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
-  Copyright (c) 2013-2018 Montel Laurent <montel@kde.org>
-
-  This program is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License, version 2, as
-  published by the Free Software Foundation.
-
-  This program is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along
-  with this program; if not, write to the Free Software Foundation, Inc.,
-  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#ifndef SIEVESYNTAXHIGHLIGHTERUTIL_H
-#define SIEVESYNTAXHIGHLIGHTERUTIL_H
-
-#include "pimcommon_export.h"
-#include <QStringList>
-
-namespace PimCommon {
-class PIMCOMMON_EXPORT SieveSyntaxHighlighterUtil
-{
-public:
-    QStringList fullCapabilities() const;
-};
-}
-
-#endif // SIEVESYNTAXHIGHLIGHTERUTIL_H
diff --git a/src/pimcommon/sievehighlighter/sievesyntaxhighlighterutil.cpp b/src/pimcommon/sievehighlighter/sievesyntaxhighlighterutil.cpp
deleted file mode 100644
--- a/src/pimcommon/sievehighlighter/sievesyntaxhighlighterutil.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
-  Copyright (c) 2013-2018 Montel Laurent <montel@kde.org>
-
-  This program is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License, version 2, as
-  published by the Free Software Foundation.
-
-  This program is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along
-  with this program; if not, write to the Free Software Foundation, Inc.,
-  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#include "sievesyntaxhighlighterutil.h"
-
-namespace PimCommon {
-QStringList SieveSyntaxHighlighterUtil::fullCapabilities() const
-{
-    return QStringList()
-           << QStringLiteral("mboxmetadata")
-           << QStringLiteral("body")
-           << QStringLiteral("extlists")
-           << QStringLiteral("envelope")
-           << QStringLiteral("redirect")
-           << QStringLiteral("fileinto")
-           << QStringLiteral("editheader")
-           << QStringLiteral("reject")
-           << QStringLiteral("ereject")
-           << QStringLiteral("imapflags")
-           << QStringLiteral("imap4flags")
-           << QStringLiteral("enotify")
-           << QStringLiteral("date")
-           << QStringLiteral("copy")
-           << QStringLiteral("mailbox")
-           << QStringLiteral("spamtest")
-           << QStringLiteral("spamtestplus")
-           << QStringLiteral("virustest")
-           << QStringLiteral("vacation")
-           << QStringLiteral("vacation-seconds")
-           << QStringLiteral("ihave")
-           << QStringLiteral("subaddress")
-           << QStringLiteral("environment")
-           << QStringLiteral("enclose")
-           << QStringLiteral("replace")
-           << QStringLiteral("include")
-           << QStringLiteral("extracttext")
-           << QStringLiteral("metadata")
-           << QStringLiteral("convert")
-           << QStringLiteral("foreverypart")
-           << QStringLiteral("variables")
-           << QStringLiteral("servermetadata")
-           << QStringLiteral("regex")
-           << QStringLiteral("relational")
-           << QStringLiteral("comparator-i;ascii-numeric")
-           << QStringLiteral("comparator-i;unicode-casemap")
-           << QStringLiteral("encoded-character");
-}
-}