diff --git a/kdecore/sycoca/kprotocolinfo.cpp b/kdecore/sycoca/kprotocolinfo.cpp
index dc0d5e5a..b34f9fe3 100644
--- a/kdecore/sycoca/kprotocolinfo.cpp
+++ b/kdecore/sycoca/kprotocolinfo.cpp
@@ -198,16 +198,6 @@ QStringList KProtocolInfo::protocols()
     return KProtocolInfoFactory::self()->protocols();
 }
 
-bool KProtocolInfo::isFilterProtocol(const QString &protocol)
-{
-    // call the findProtocol directly (not via KProtocolManager) to bypass any proxy settings.
-    KProtocolInfo::Ptr prot = KProtocolInfoFactory::self()->findProtocol(protocol);
-    if (!prot) {
-        return false;
-    }
-    return !prot->m_isSourceProtocol;
-}
-
 void KProtocolInfo::selectServiceOrHelper(const QString &protocol, KProtocolInfo::Ptr &returnProtocol, KService::Ptr &returnService)
 {
     // have up to two sources of data:
@@ -369,11 +359,6 @@ KProtocolInfo::FileNameUsedForCopying KProtocolInfo::fileNameUsedForCopying() co
     return d->fileNameUsedForCopying;
 }
 
-bool KProtocolInfo::isFilterProtocol(const KUrl &url)
-{
-    return isFilterProtocol(url.protocol());
-}
-
 bool KProtocolInfo::isHelperProtocol(const KUrl &url)
 {
     return isHelperProtocol(url.protocol());
@@ -383,7 +368,7 @@ bool KProtocolInfo::isHelperProtocol(const QString &protocol)
 {
     // call the findProtocol directly (not via KProtocolManager) to bypass any proxy settings.
     KProtocolInfo::Ptr prot = KProtocolInfoFactory::self()->findProtocol(protocol);
-    if ( prot ) {
+    if (prot) {
         return prot->m_isHelperProtocol;
     }
     const KService::Ptr service = KMimeTypeTrader::self()->preferredService(QString::fromLatin1("x-scheme-handler/") + protocol);
diff --git a/kdecore/sycoca/kprotocolinfo.h b/kdecore/sycoca/kprotocolinfo.h
index 0d46f82e..0e9f30fe 100644
--- a/kdecore/sycoca/kprotocolinfo.h
+++ b/kdecore/sycoca/kprotocolinfo.h
@@ -110,30 +110,6 @@ public:
      */
     static bool isHelperProtocol(const QString &protocol);
 
-    /**
-     * Returns whether the protocol can act as a filter protocol.
-     *
-     * A filter protocol can operate on data that is passed to it
-     * but does not retrieve/store data itself, like sftp.
-     * A filter protocol is the opposite of a source protocol.
-     *
-     * The "source=" field in the protocol description file determines
-     * whether a protocol is a source protocol or a filter protocol.
-     * Valid values for this field are "true" (default) for source protocol or
-     * "false" for filter protocol.
-     *
-     * @param url the url to check
-     * @return true if the protocol is a filter (e.g. sftp), false if the
-     *         protocol is a helper or source
-     */
-    static bool isFilterProtocol(const KUrl &url);
-
-    /**
-     * Same as above except you can supply just the protocol instead of
-     * the whole URL.
-     */
-    static bool isFilterProtocol(const QString &protocol);
-
     /**
      * Returns the name of the icon, associated with the specified protocol.
      *