diff --git a/src/qtgui/confgui/confguiindex.cpp b/src/qtgui/confgui/confguiindex.cpp
index 2accf3fd..56714d8b 100644
--- a/src/qtgui/confgui/confguiindex.cpp
+++ b/src/qtgui/confgui/confguiindex.cpp
@@ -252,8 +252,10 @@ bool ConfIndexW::setupTopPanel(int idx)
     }
     m_w->addParam(idx, ConfTabsW::CFPT_CSTRL, "indexstemminglanguages",
                   tr("Stemming languages"),
-                  tr("The languages for which stemming expansion<br>"
-                     "dictionaries will be built."), 0, 0, &m_stemlangs);
+                  tr("The languages for which stemming expansion "
+                     "dictionaries will be built.<br>See the Xapian stemmer "
+					 "documentation for possible values. E.g. english, "
+					 "french, german..."), 0, 0, &m_stemlangs);
 
     m_w->addParam(idx, ConfTabsW::CFPT_FN, "logfilename",
                   tr("Log file name"),
@@ -289,12 +291,13 @@ bool ConfIndexW::setupTopPanel(int idx)
         idx, ConfTabsW::CFPT_STR, "aspellLanguage",
         tr("Aspell language"),
         tr("The language for the aspell dictionary. "
-           "This should look like 'en' or 'fr' ...<br>"
+           "The values are are 2-letter "
+		   "language codes, e.g. 'en', 'fr' ...<br>"
            "If this value is not set, the NLS environment "
            "will be used to compute it, which usually works. "
            "To get an idea of what is installed on your system, "
            "type 'aspell config' and look for .dat files inside "
-           "the 'data-dir' directory. "));
+           "the 'data-dir' directory."));
     m_w->enableLink(bparam, cparam, true);
 
     m_w->addParam(