diff --git a/code/nel/src/3d/animation.cpp b/code/nel/src/3d/animation.cpp
index 8cd51cc46..9cfd3f26b 100644
--- a/code/nel/src/3d/animation.cpp
+++ b/code/nel/src/3d/animation.cpp
@@ -89,8 +89,8 @@ void CAnimation::serial (NLMISC::IStream& f)
 	nlassert(_IdByChannelId.empty());
 
 	// Serial a header
-	f.serialCheck ((uint32)"_LEN");
-	f.serialCheck ((uint32)"MINA");
+	f.serialCheck ((uint32)'_LEN');
+	f.serialCheck ((uint32)'MINA');
 
 	// Serial a version
 	sint version=f.serialVersion (2);
diff --git a/code/nel/src/3d/animation_set.cpp b/code/nel/src/3d/animation_set.cpp
index 79f59b565..94946799b 100644
--- a/code/nel/src/3d/animation_set.cpp
+++ b/code/nel/src/3d/animation_set.cpp
@@ -185,9 +185,9 @@ void CAnimationSet::serial (NLMISC::IStream& f)
 	nlassert(!_AnimHeaderOptimisation);
 
 	// Serial an header
-	f.serialCheck ((uint32)"_LEN");
-	f.serialCheck ((uint32)"MINA");
-	f.serialCheck ((uint32)"TES_");
+	f.serialCheck ((uint32)'_LEN');
+	f.serialCheck ((uint32)'MINA');
+	f.serialCheck ((uint32)'TES_');
 
 	// Serial a version
 	uint	ver= f.serialVersion (1);
diff --git a/code/nel/src/3d/lod_character_shape.cpp b/code/nel/src/3d/lod_character_shape.cpp
index 24e87baa8..09aded766 100644
--- a/code/nel/src/3d/lod_character_shape.cpp
+++ b/code/nel/src/3d/lod_character_shape.cpp
@@ -264,9 +264,9 @@ void	CLodCharacterShapeBuild::compile(const std::vector<bool> &triangleSelection
 void	CLodCharacterShapeBuild::serial(NLMISC::IStream &f)
 {
 	// NEL_CLODBULD
-	f.serialCheck((uint32)"_LEN");
-	f.serialCheck((uint32)"DOLC");
-	f.serialCheck((uint32)"DLUB");
+	f.serialCheck((uint32)'_LEN');
+	f.serialCheck((uint32)'DOLC');
+	f.serialCheck((uint32)'DLUB');
 
 	/*
 	Version 1:
@@ -525,9 +525,9 @@ void			CLodCharacterShape::CBoneInfluence::serial(NLMISC::IStream &f)
 void			CLodCharacterShape::serial(NLMISC::IStream &f)
 {
 	// NEL_CLODSHAP
-	f.serialCheck((uint32)"_LEN");
-	f.serialCheck((uint32)"DOLC");
-	f.serialCheck((uint32)"PAHS");
+	f.serialCheck((uint32)'_LEN');
+	f.serialCheck((uint32)'DOLC');
+	f.serialCheck((uint32)'PAHS');
 
 	/*
 	Version 1:
diff --git a/code/nel/src/3d/packed_world.cpp b/code/nel/src/3d/packed_world.cpp
index db86191b4..64b669fc4 100644
--- a/code/nel/src/3d/packed_world.cpp
+++ b/code/nel/src/3d/packed_world.cpp
@@ -152,7 +152,7 @@ void CPackedWorld::getZones(std::vector<TPackedZoneBaseSPtr> &zones)
 void CPackedWorld::serialZoneNames(NLMISC::IStream &f) throw(NLMISC::EStream)
 {
 	f.serialVersion(1);
-	f.serialCheck((uint32) "OWPA");
+	f.serialCheck((uint32) 'OWPA');
 	f.serialCont(ZoneNames);
 }
 
diff --git a/code/nel/src/3d/ps_located.cpp b/code/nel/src/3d/ps_located.cpp
index 668db58a1..f066b6f3c 100644
--- a/code/nel/src/3d/ps_located.cpp
+++ b/code/nel/src/3d/ps_located.cpp
@@ -73,7 +73,7 @@ CPSLocated::CPSLocated() : /*_MaxNumFaces(0),*/
 						   _ParametricMotion(false),
 						   _TriggerOnDeath(false),
 						   _LastForever(true),
-						   _TriggerID((uint32) "NONE"),
+						   _TriggerID((uint32) 'NONE'),
 						   _NonIntegrableForceNbRefs(0),
 						   _NumIntegrableForceWithDifferentBasis(0)
 {
diff --git a/code/nel/src/3d/scene_group.cpp b/code/nel/src/3d/scene_group.cpp
index e9f98ab04..7cfa56b02 100644
--- a/code/nel/src/3d/scene_group.cpp
+++ b/code/nel/src/3d/scene_group.cpp
@@ -405,7 +405,7 @@ void CInstanceGroup::serial (NLMISC::IStream& f)
 	 * ***********************************************/
 
 	// Serial a header
-	f.serialCheck ((uint32)"TPRG");
+	f.serialCheck ((uint32)'TPRG');
 
 	/*
 	Version 5:
diff --git a/code/nel/src/3d/shape.cpp b/code/nel/src/3d/shape.cpp
index dbb099b64..adc610827 100644
--- a/code/nel/src/3d/shape.cpp
+++ b/code/nel/src/3d/shape.cpp
@@ -116,7 +116,7 @@ IShape*	CShapeStream::getShapePointer () const
 void CShapeStream::serial(NLMISC::IStream &f) throw(NLMISC::EStream)
 {
 	// First, serial an header or checking if it is correct
-	f.serialCheck ((uint32)"PAHS");
+	f.serialCheck ((uint32)'PAHS');
 
 	// Then, serial the shape
 	f.serialPolyPtr (_Shape);
diff --git a/code/nel/src/3d/skeleton_weight.cpp b/code/nel/src/3d/skeleton_weight.cpp
index e5962b66d..4668a005a 100644
--- a/code/nel/src/3d/skeleton_weight.cpp
+++ b/code/nel/src/3d/skeleton_weight.cpp
@@ -60,7 +60,7 @@ void CSkeletonWeight::build (const TNodeArray& array)
 void CSkeletonWeight::serial (NLMISC::IStream& f)
 {
 	// Serial a header
-	f.serialCheck ((uint32)"TWKS");
+	f.serialCheck ((uint32)'TWKS');
 
 	// Serial a version number
 	(void)f.serialVersion (0);
diff --git a/code/nel/src/3d/tile_far_bank.cpp b/code/nel/src/3d/tile_far_bank.cpp
index 4aa95f872..75a758560 100644
--- a/code/nel/src/3d/tile_far_bank.cpp
+++ b/code/nel/src/3d/tile_far_bank.cpp
@@ -104,8 +104,8 @@ const sint CTileFarBank::_Version=0x0;
 void CTileFarBank::serial(NLMISC::IStream &f) throw(NLMISC::EStream)
 {
 	// Write/Check "FAR_BANK" in header of the stream
-	f.serialCheck ((uint32)"_RAF");
-	f.serialCheck ((uint32)"KNAB");
+	f.serialCheck ((uint32)'_RAF');
+	f.serialCheck ((uint32)'KNAB');
 
 	// Serial version
 	(void)f.serialVersion(_Version);
diff --git a/code/nel/src/3d/vegetable_shape.cpp b/code/nel/src/3d/vegetable_shape.cpp
index f10591bf9..0b8697d63 100644
--- a/code/nel/src/3d/vegetable_shape.cpp
+++ b/code/nel/src/3d/vegetable_shape.cpp
@@ -192,10 +192,10 @@ void		CVegetableShape::serial(NLMISC::IStream &f)
 		- BestSidedPreComputeLighting
 	*/
 	sint	ver= f.serialVersion(1);
-	f.serialCheck((uint32)"_LEN");
-	f.serialCheck((uint32)"GEV_");
-	f.serialCheck((uint32)"BATE");
-	f.serialCheck((uint32)"__EL");
+	f.serialCheck((uint32)'_LEN');
+	f.serialCheck((uint32)'GEV_');
+	f.serialCheck((uint32)'BATE');
+	f.serialCheck((uint32)'__EL');
 
 	f.serial(Lighted);
 	f.serial(DoubleSided);
diff --git a/code/nel/src/3d/zone.cpp b/code/nel/src/3d/zone.cpp
index 5b923af56..4acca80f5 100644
--- a/code/nel/src/3d/zone.cpp
+++ b/code/nel/src/3d/zone.cpp
@@ -458,7 +458,7 @@ void			CZone::serial(NLMISC::IStream &f)
 		throw EOlderStream(f);
 	}
 
-	f.serialCheck((uint32)"ENOZ");
+	f.serialCheck((uint32)'ENOZ');
 
 	f.xmlSerial (ZoneId, "ZONE_ID");
 	f.xmlSerial (ZoneBB, "BB");
diff --git a/code/nel/src/ligo/ligo_material.cpp b/code/nel/src/ligo/ligo_material.cpp
index a51dd3171..643629648 100644
--- a/code/nel/src/ligo/ligo_material.cpp
+++ b/code/nel/src/ligo/ligo_material.cpp
@@ -80,7 +80,7 @@ void CMaterial::serial (NLMISC::IStream &s)
 	s.xmlPush ("LIGO_MATERIAL");
 
 		// Serial the header
-		s.serialCheck ((uint32)"TMOL");
+		s.serialCheck ((uint32)'TMOL');
 
 		// Serial the version
 		/*sint ver =*/ s.serialVersion (0);
diff --git a/code/nel/src/ligo/transition.cpp b/code/nel/src/ligo/transition.cpp
index 4b90c9078..b13c4f566 100644
--- a/code/nel/src/ligo/transition.cpp
+++ b/code/nel/src/ligo/transition.cpp
@@ -199,7 +199,7 @@ void CTransition::serial (NLMISC::IStream &s)
 	s.xmlPush ("LIGO_TRANSITION");
 
 		// Serial the header
-		s.serialCheck ((uint32)"STGL");
+		s.serialCheck ((uint32)'STGL');
 
 		// Serial the version
 		/*sint ver =*/ s.serialVersion (0);
diff --git a/code/nel/src/ligo/zone_region.cpp b/code/nel/src/ligo/zone_region.cpp
index 71f4c06c2..ad65aec8e 100644
--- a/code/nel/src/ligo/zone_region.cpp
+++ b/code/nel/src/ligo/zone_region.cpp
@@ -153,7 +153,7 @@ void CZoneRegion::serial (NLMISC::IStream &f)
 	f.xmlPush ("LAND");
 
 		sint32 version = f.serialVersion (1);
-		f.serialCheck ((uint32)"DNAL");
+		f.serialCheck ((uint32)'DNAL');
 
 		f.xmlSerial (_MinX, "MIN_X");
 		f.xmlSerial (_MinY, "MIN_Y");
diff --git a/code/nel/src/pacs/primitive_block_pacs.cpp b/code/nel/src/pacs/primitive_block_pacs.cpp
index 14dd2764b..0681d2eea 100644
--- a/code/nel/src/pacs/primitive_block_pacs.cpp
+++ b/code/nel/src/pacs/primitive_block_pacs.cpp
@@ -85,7 +85,7 @@ void CPrimitiveBlock::serial (NLMISC::IStream &s)
 	s.xmlPush ("PRIMITIVE_BLOCK");
 
 	// Serial checks
-	s.serialCheck ((uint32)"KBRP");
+	s.serialCheck ((uint32)'KBRP');
 
 	// Serial the version
 	(void)s.serialVersion (0);
diff --git a/code/ryzom/client/src/string_manager_client.h b/code/ryzom/client/src/string_manager_client.h
index 7be20d5bb..89e05acd0 100644
--- a/code/ryzom/client/src/string_manager_client.h
+++ b/code/ryzom/client/src/string_manager_client.h
@@ -341,8 +341,8 @@ private:
 
 		void	serial(NLMISC::IStream &f)
 		{
-			f.serialCheck((uint32)"_RTS");
-			f.serialCheck((uint32)"KCAP");
+			f.serialCheck((uint32)'_RTS');
+			f.serialCheck((uint32)'KCAP');
 			f.serialVersion(0);
 			f.serial(PackedVersion);
 			f.serial(LanguageCode);