diff --git a/rtgui/cachemanager.cc b/rtgui/cachemanager.cc
index 5601a7c0f..61b9f772b 100644
--- a/rtgui/cachemanager.cc
+++ b/rtgui/cachemanager.cc
@@ -37,7 +37,7 @@ namespace
 {
 
 constexpr int cacheDirMode = 0777;
-constexpr const char* cacheDirs[] = { "profiles", "images", "aehistograms", "embprofiles", "data", "mip" };
+constexpr const char* cacheDirs[] = { "profiles", "images", "aehistograms", "embprofiles", "data"};
 
 }
 
@@ -195,7 +195,6 @@ void CacheManager::renameEntry (const std::string& oldfilename, const std::strin
     error |= g_rename (getCacheFileName ("aehistograms", oldfilename, "", oldmd5).c_str (), getCacheFileName ("aehistograms", newfilename, "", newmd5).c_str ());
     error |= g_rename (getCacheFileName ("embprofiles", oldfilename, ".icc", oldmd5).c_str (), getCacheFileName ("embprofiles", newfilename, ".icc", newmd5).c_str ());
     error |= g_rename (getCacheFileName ("data", oldfilename, ".txt", oldmd5).c_str (), getCacheFileName ("data", newfilename, ".txt", newmd5).c_str ());
-    error |= g_rename (getCacheFileName ("mip", oldfilename, ".mip", oldmd5).c_str (), getCacheFileName ("mip", newfilename, ".mip", newmd5).c_str ());
 
     if (error != 0 && options.rtSettings.verbose) {
         std::cerr << "Failed to rename all files for cache entry '" << oldfilename << "': " << g_strerror (errno) << std::endl;
@@ -259,13 +258,6 @@ void CacheManager::clearProfiles () const
 
 }
 
-void CacheManager::clearmip () const
-{
-    MyMutex::MyLock lock (mutex);
-
-    deleteDir ("mip");
-
-}
 
 void CacheManager::deleteDir (const Glib::ustring& dirName) const
 {
@@ -305,7 +297,6 @@ void CacheManager::deleteFiles (const Glib::ustring& fname, const std::string& m
 
     if (purgeProfile) {
         error |= g_remove (getCacheFileName ("profiles", fname, paramFileExtension, md5).c_str ());
-        error |= g_remove (getCacheFileName ("mip", fname, ".mip", md5).c_str ());
 
     }
 }
diff --git a/rtgui/cachemanager.h b/rtgui/cachemanager.h
index 5ee1ff63d..574617808 100644
--- a/rtgui/cachemanager.h
+++ b/rtgui/cachemanager.h
@@ -59,7 +59,6 @@ public:
     void clearAll () const;
     void clearImages () const;
     void clearProfiles () const;
-    void clearmip () const;
     void clearFromCache (const Glib::ustring& fname, bool purge) const;
     static std::string getMD5 (const Glib::ustring& fname);
 
diff --git a/rtgui/preferences.cc b/rtgui/preferences.cc
index 6f651a4a8..1a597fd8a 100644
--- a/rtgui/preferences.cc
+++ b/rtgui/preferences.cc
@@ -1363,11 +1363,9 @@ Gtk::Widget* Preferences::getFileBrowserPanel()
     Gtk::HBox* hb5 = Gtk::manage(new Gtk::HBox());
     clearThumbnails = Gtk::manage(new Gtk::Button(M("PREFERENCES_CACHECLEARTHUMBS")));
     clearProfiles = Gtk::manage(new Gtk::Button(M("PREFERENCES_CACHECLEARPROFILES")));
-    clearmip = Gtk::manage(new Gtk::Button(M("PREFERENCES_CACHECLEARMIP")));
     clearAll = Gtk::manage(new Gtk::Button(M("PREFERENCES_CACHECLEARALL")));
     hb5->pack_start(*clearThumbnails, Gtk::PACK_SHRINK, 4);
     hb5->pack_start(*clearProfiles, Gtk::PACK_SHRINK, 4);
-    hb5->pack_start(*clearmip, Gtk::PACK_SHRINK, 4);
     hb5->pack_start(*clearAll, Gtk::PACK_SHRINK, 4);
     vbc->pack_start(*hb5, Gtk::PACK_SHRINK, 4);
 
@@ -1390,7 +1388,6 @@ Gtk::Widget* Preferences::getFileBrowserPanel()
     extension->signal_activate().connect(sigc::mem_fun(*this, &Preferences::addExtPressed));
     clearThumbnails->signal_clicked().connect(sigc::mem_fun(*this, &Preferences::clearThumbImagesPressed));
     clearProfiles->signal_clicked().connect(sigc::mem_fun(*this, &Preferences::clearProfilesPressed));
-    clearmip->signal_clicked().connect(sigc::mem_fun(*this, &Preferences::clearmipPressed));
     clearAll->signal_clicked().connect(sigc::mem_fun(*this, &Preferences::clearAllPressed));
 
     swFileBrowser->add(*vbFileBrowser);
@@ -2417,11 +2414,6 @@ void Preferences::clearProfilesPressed()
     cacheMgr->clearProfiles();
 }
 
-void Preferences::clearmipPressed()
-{
-
-    cacheMgr->clearmip();
-}
 
 void Preferences::clearThumbImagesPressed()
 {
diff --git a/rtgui/preferences.h b/rtgui/preferences.h
index c38afecb0..949f50376 100644
--- a/rtgui/preferences.h
+++ b/rtgui/preferences.h
@@ -151,7 +151,6 @@ class Preferences : public Gtk::Dialog, public ProfileStoreListener
     Gtk::SpinButton*   maxRecentFolders;
     Gtk::Button*       clearThumbnails;
     Gtk::Button*       clearProfiles;
-    Gtk::Button*       clearmip;
     Gtk::Button*       clearAll;
     Gtk::Entry*     extension;
     Gtk::TreeView*  extensions;
@@ -282,7 +281,6 @@ public:
     void darkFrameChanged ();
     void flatFieldChanged ();
     void clearProfilesPressed ();
-    void clearmipPressed ();
     void clearThumbImagesPressed ();
     void clearAllPressed ();