diff --git a/src/Thesaurus.cpp b/src/Thesaurus.cpp
index 6bc0823425..42daa0c8eb 100644
--- a/src/Thesaurus.cpp
+++ b/src/Thesaurus.cpp
@@ -42,79 +42,6 @@ using namespace lyx::support::os;
 
 namespace lyx {
 
-#ifdef HAVE_LIBAIKSAURUS
-
-struct Thesaurus::Private
-{
-	Private(): thes_(new Aiksaurus) {}
-	Aiksaurus * thes_;
-};
-
-Thesaurus::Meanings Thesaurus::lookup(docstring const & t, docstring const &)
-{
-	Meanings meanings;
-
-	// aiksaurus is for english text only, therefore it does not work
-	// with non-ascii strings.
-	// The interface of the Thesaurus class uses docstring because a
-	// non-english thesaurus is possible in theory.
-	if (!support::isAscii(t))
-		// to_ascii() would assert
-		return meanings;
-
-	string const text = to_ascii(t);
-
-	docstring error = from_ascii(d->thes_->error());
-	if (!error.empty()) {
-		static bool sent_error = false;
-		if (!sent_error) {
-			frontend::Alert::error(_("Thesaurus failure"),
-				     bformat(_("Aiksaurus returned the following error:\n\n%1$s."),
-					     error));
-			sent_error = true;
-		}
-		return meanings;
-	}
-	if (!d->thes_->find(text.c_str()))
-		return meanings;
-
-	// weird api, but ...
-
-	int prev_meaning = -1;
-	int cur_meaning;
-	docstring meaning;
-
-	// correct, returns "" at the end
-	string ret = d->thes_->next(cur_meaning);
-
-	while (!ret.empty()) {
-		if (cur_meaning != prev_meaning) {
-			meaning = from_ascii(ret);
-			ret = d->thes_->next(cur_meaning);
-			prev_meaning = cur_meaning;
-		} else {
-			if (ret != text)
-				meanings[meaning].push_back(from_ascii(ret));
-		}
-
-		ret = d->thes_->next(cur_meaning);
-	}
-
-	for (Meanings::iterator it = meanings.begin();
-	     it != meanings.end(); ++it)
-		sort(it->second.begin(), it->second.end());
-
-	return meanings;
-}
-
-
-bool Thesaurus::thesaurusAvailable(docstring const & lang) const
-{
-	// we support English only
-	return prefixIs(lang, from_ascii("en_"));
-}
-
-#else // HAVE_LIBAIKSAURUS
 #ifdef HAVE_LIBMYTHES
 
 namespace {
@@ -272,7 +199,80 @@ Thesaurus::Meanings Thesaurus::lookup(docstring const & t, docstring const & lan
 	return meanings;
 }
 
-#else
+#else // HAVE_LIBMYTHES
+#ifdef HAVE_LIBAIKSAURUS
+
+struct Thesaurus::Private
+{
+	Private(): thes_(new Aiksaurus) {}
+	Aiksaurus * thes_;
+};
+
+Thesaurus::Meanings Thesaurus::lookup(docstring const & t, docstring const &)
+{
+	Meanings meanings;
+
+	// aiksaurus is for english text only, therefore it does not work
+	// with non-ascii strings.
+	// The interface of the Thesaurus class uses docstring because a
+	// non-english thesaurus is possible in theory.
+	if (!support::isAscii(t))
+		// to_ascii() would assert
+		return meanings;
+
+	string const text = to_ascii(t);
+
+	docstring error = from_ascii(d->thes_->error());
+	if (!error.empty()) {
+		static bool sent_error = false;
+		if (!sent_error) {
+			frontend::Alert::error(_("Thesaurus failure"),
+				     bformat(_("Aiksaurus returned the following error:\n\n%1$s."),
+					     error));
+			sent_error = true;
+		}
+		return meanings;
+	}
+	if (!d->thes_->find(text.c_str()))
+		return meanings;
+
+	// weird api, but ...
+
+	int prev_meaning = -1;
+	int cur_meaning;
+	docstring meaning;
+
+	// correct, returns "" at the end
+	string ret = d->thes_->next(cur_meaning);
+
+	while (!ret.empty()) {
+		if (cur_meaning != prev_meaning) {
+			meaning = from_ascii(ret);
+			ret = d->thes_->next(cur_meaning);
+			prev_meaning = cur_meaning;
+		} else {
+			if (ret != text)
+				meanings[meaning].push_back(from_ascii(ret));
+		}
+
+		ret = d->thes_->next(cur_meaning);
+	}
+
+	for (Meanings::iterator it = meanings.begin();
+	     it != meanings.end(); ++it)
+		sort(it->second.begin(), it->second.end());
+
+	return meanings;
+}
+
+
+bool Thesaurus::thesaurusAvailable(docstring const & lang) const
+{
+	// we support English only
+	return prefixIs(lang, from_ascii("en_"));
+}
+
+#else // HAVE_LIBAIKSAURUS
 
 struct Thesaurus::Private
 {
@@ -290,8 +290,8 @@ bool Thesaurus::thesaurusAvailable(docstring const &) const
 	return false;
 }
 
-#endif // HAVE_LIBMYTHES
 #endif // HAVE_LIBAIKSAURUS
+#endif // HAVE_LIBMYTHES
 
 Thesaurus::Thesaurus() : d(new Thesaurus::Private)
 {