diff --git a/code/nel/include/nel/3d/track_tcb.h b/code/nel/include/nel/3d/track_tcb.h
index e91cfb397..153dcbc54 100644
--- a/code/nel/include/nel/3d/track_tcb.h
+++ b/code/nel/include/nel/3d/track_tcb.h
@@ -218,7 +218,7 @@ protected:
 			date*= previous->OODeltaTime;
 			NLMISC::clamp(date, 0,1);
 
-			date = this->ease(previous, date);
+			date = this->ease(previous, (float)date);
 
 			float hb[4];
 			this->computeHermiteBasis(date, hb);
diff --git a/code/nel/src/georges/form_elm.cpp b/code/nel/src/georges/form_elm.cpp
index 658d1d9f6..01e4010e2 100644
--- a/code/nel/src/georges/form_elm.cpp
+++ b/code/nel/src/georges/form_elm.cpp
@@ -231,7 +231,7 @@ bool CFormElm::isAtom () const
 const CType* CFormElm::getType ()
 {
 	warning (false, "getType", "This node is not an atom.");
-	return 0;
+	return NULL;
 }
 
 // ***************************************************************************
diff --git a/code/ryzom/server/src/admin_modules/aes_module.cpp b/code/ryzom/server/src/admin_modules/aes_module.cpp
index c4faf5c47..6a45e302d 100644
--- a/code/ryzom/server/src/admin_modules/aes_module.cpp
+++ b/code/ryzom/server/src/admin_modules/aes_module.cpp
@@ -573,7 +573,7 @@ namespace ADMIN
 						time_t t = now;
 						fprintf(fp, "AESReportDate=%s", ::ctime(&t));
 
-						fprintf(fp, "NBService=%u\n", _ServiceStates.size());
+						fprintf(fp, "NBService=%u\n", (uint)_ServiceStates.size());
 						// output state of each service
 						TServiceStates::iterator first(_ServiceStates.begin()), last(_ServiceStates.end());
 						for (; first != last; ++first)
diff --git a/code/ryzom/server/src/ai_share/aids_messages.h b/code/ryzom/server/src/ai_share/aids_messages.h
index 7ef43817b..76283ec04 100644
--- a/code/ryzom/server/src/ai_share/aids_messages.h
+++ b/code/ryzom/server/src/ai_share/aids_messages.h
@@ -101,12 +101,12 @@ public:
 	{
 	}
 	
-	CMsgAIFeedback(std::string message) 
+	CMsgAIFeedback(const std::string &message)
 	{
 		Message=message;
 	}
 
-	CMsgAIFeedback(char *msgStr) 
+	CMsgAIFeedback(const char *msgStr)
 	{
 		Message=std::string(msgStr);
 	}
diff --git a/code/ryzom/server/src/entities_game_service/game_item_manager/game_item.cpp b/code/ryzom/server/src/entities_game_service/game_item_manager/game_item.cpp
index 30ff4acae..e36a4382e 100644
--- a/code/ryzom/server/src/entities_game_service/game_item_manager/game_item.cpp
+++ b/code/ryzom/server/src/entities_game_service/game_item_manager/game_item.cpp
@@ -242,11 +242,11 @@ float CItemCraftParameters::getCraftParameterValue( RM_FABER_STAT_TYPE::TRMStatT
 		case RM_FABER_STAT_TYPE::ShockWaveProtection:
 		case RM_FABER_STAT_TYPE::PoisonProtection:
 		case RM_FABER_STAT_TYPE::ElectricityProtection:
-			if (Protection1 == statType)
+			if (Protection1 == (PROTECTION_TYPE::TProtectionType)statType)
 				return Protection1Factor;
-			else if (Protection2 == statType)
+			else if (Protection2 == (PROTECTION_TYPE::TProtectionType)statType)
 				return Protection2Factor;
-			else if (Protection3 == statType)
+			else if (Protection3 == (PROTECTION_TYPE::TProtectionType)statType)
 				return Protection3Factor;
 			else return 0.0f;
 		case RM_FABER_STAT_TYPE::DesertResistance:
diff --git a/code/ryzom/server/src/input_output_service/string_manager_parser.cpp b/code/ryzom/server/src/input_output_service/string_manager_parser.cpp
index 67ce62f10..0cbfbf595 100644
--- a/code/ryzom/server/src/input_output_service/string_manager_parser.cpp
+++ b/code/ryzom/server/src/input_output_service/string_manager_parser.cpp
@@ -650,7 +650,7 @@ bool CStringManager::parseBlock(const ucstring &block, CPhrase &phrase)
 					&& (first - clause.String.begin()) == (sint) clause.Replacements[repCount].InsertPlace)
 				{
 					// check parameter type
-					char *subst;
+					const char *subst;
 					uint paramIndex = clause.Replacements[repCount].ParamIndex;
 
 					TParamId &paramId = phrase.Params[paramIndex]->ParamId;