diff --git a/ChangeLog b/ChangeLog
index 8938b9990..bec88f39f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-17  Damien Lefortier <dam@lrde.epita.fr>
+
+	Fix make check in sanity.
+
+	* src/tgba/taa.cc, src/tgbaalgos/ltl2taa.cc: Fix style.
+
 2009-10-16  Damien Lefortier <dam@lrde.epita.fr>
 
 	Minor fixes.
diff --git a/src/tgba/taa.cc b/src/tgba/taa.cc
index 103027319..a6febf380 100644
--- a/src/tgba/taa.cc
+++ b/src/tgba/taa.cc
@@ -156,7 +156,7 @@ namespace spot
 
     state_set::const_iterator i1 = ss->begin();
     sn_map::const_iterator i2;
-    if (ss->size() == 0)
+    if (ss->empty())
       return std::string("{}");
     if (ss->size() == 1)
     {
@@ -346,7 +346,7 @@ namespace spot
       {
 	if (std::distance(its_[i], bounds_[i].second) > 1)
 	{
-	  its_[i]++;
+	  ++its_[i];
 	  break;
 	}
 	else
@@ -370,7 +370,7 @@ namespace spot
     for (unsigned i = 0; i < its_.size(); ++i)
       if (its_[i] == bounds_[i].second)
 	return true;
-    return its_.size() == 0 ? true : false;
+    return its_.empty() ? true : false;
   }
 
   spot::state_set*
diff --git a/src/tgbaalgos/ltl2taa.cc b/src/tgbaalgos/ltl2taa.cc
index b5004bb07..68e628e49 100644
--- a/src/tgbaalgos/ltl2taa.cc
+++ b/src/tgbaalgos/ltl2taa.cc
@@ -108,7 +108,7 @@ namespace spot
 	switch (node->op())
 	{
 	  case unop::X:
-	    if (v.succ_.size() == 0) // Handle X(0)
+	    if (v.succ_.empty()) // Handle X(0)
 	      return;
 	    dst.push_back(v.init_);
 	    res_->create_transition(init_, dst);
@@ -197,7 +197,7 @@ namespace spot
 	for (unsigned n = 0; n < node->size(); ++n)
 	{
 	  vs.push_back(recurse(node->nth(n)));
-	  if (vs[n].succ_.size() == 0) // Handle 0
+	  if (vs[n].succ_.empty()) // Handle 0
 	    ok = false;
 	}
 
@@ -281,7 +281,7 @@ namespace spot
 	  formula* f = constant::true_instance();
 	  for (unsigned i = 0; i < vs.size(); ++i)
 	  {
-	    if (vs[i].succ_.size() == 0)
+	    if (vs[i].succ_.empty())
 	      continue;
 	    const succ_state& ss(vs[i].succ_[pos[i] - 1]);
 	    std::copy(ss.first.begin(), ss.first.end(), ii(u, u.begin()));
@@ -292,7 +292,7 @@ namespace spot
 
 	  for (int i = vs.size() - 1; i >= 0; --i)
 	  {
-	    if (vs[i].succ_.size() == 0)
+	    if (vs[i].succ_.empty())
 	      continue;
 	    if (pos[i] > 1 || (i == 0 && pos[0] == 1))
 	    {