diff --git a/code/nel/src/misc/sha1.cpp b/code/nel/src/misc/sha1.cpp
index eb25b3a84..bb375a928 100644
--- a/code/nel/src/misc/sha1.cpp
+++ b/code/nel/src/misc/sha1.cpp
@@ -85,13 +85,6 @@ typedef struct SHA1Context
     int Corrupted;             /* Is the message digest corrupted? */
 } SHA1Context;
 
-
-// Because the code does some tricky stuff, VC>6 would cry at runtime
-#ifdef _MFC_VER
-	#pragma runtime_checks( "", off )
-#endif
-
-
 //
 //  Function Prototypes
 //
@@ -194,10 +187,6 @@ CHashKey getSHA1(const string &filename, bool forcePath)
 	return hk;
 }
 
-#ifdef _MFC_VER
-	#pragma runtime_checks( "", off )
-#endif
-
 /*
  *  Define the SHA1 circular left shift macro
  */
@@ -554,7 +543,3 @@ void SHA1PadMessage(SHA1Context *context)
 
 	SHA1ProcessMessageBlock(context);
 }
-
-#ifdef _MFC_VER
-	#pragma runtime_checks( "", restore )
-#endif
diff --git a/code/nel/src/pacs/local_retriever.cpp b/code/nel/src/pacs/local_retriever.cpp
index 0aabd5532..4f4c85907 100644
--- a/code/nel/src/pacs/local_retriever.cpp
+++ b/code/nel/src/pacs/local_retriever.cpp
@@ -1638,7 +1638,7 @@ float	NLPACS::CLocalRetriever::getInteriorHeightAround(const ULocalPosition &pos
 
 // ***************************************************************************
 #ifdef NL_OS_WINDOWS
-#pragma optimize( "", off )
+//#pragma optimize( "", off )
 #endif // NL_OS_WINDOWS
 
 void	NLPACS::CLocalRetriever::findPath(const NLPACS::CLocalRetriever::CLocalPosition &A,
@@ -1853,7 +1853,7 @@ void	NLPACS::CLocalRetriever::findPath(const NLPACS::CLocalRetriever::CLocalPosi
 	path.push_back(CVector2s(B.Estimation));
 }
 #ifdef NL_OS_WINDOWS
-#pragma optimize( "", on )
+//#pragma optimize( "", on )
 #endif // NL_OS_WINDOWS
 
 // ***************************************************************************