diff --git a/code/nel/src/misc/sha1.cpp b/code/nel/src/misc/sha1.cpp
index cb262ce9b..92929b469 100644
--- a/code/nel/src/misc/sha1.cpp
+++ b/code/nel/src/misc/sha1.cpp
@@ -232,7 +232,7 @@ CHashKey getHMacSHA1(const uint8 *text, uint32 text_len, const uint8 *key, uint3
 
 	// Get hash
 	SHA1Reset(&sha);
-	SHA1Input(&sha, (const uint8_t*)buffer1.c_str(), buffer1.size());
+	SHA1Input(&sha, (const uint8_t*)buffer1.c_str(), (uint)buffer1.size());
 	SHA1Result(&sha, SHA1_Key1);
 	CHashKey hk1 (SHA1_Key1);
 
@@ -246,7 +246,7 @@ CHashKey getHMacSHA1(const uint8 *text, uint32 text_len, const uint8 *key, uint3
 
 	// Get new hash
 	SHA1Reset(&sha);
-	SHA1Input(&sha, (const uint8_t*)buffer2.c_str(), buffer2.size());
+	SHA1Input(&sha, (const uint8_t*)buffer2.c_str(), (uint)buffer2.size());
 	SHA1Result(&sha, SHA1_Key2);
 	CHashKey hk (SHA1_Key2);
 
diff --git a/code/ryzom/client/src/client_cfg.cpp b/code/ryzom/client/src/client_cfg.cpp
index 8a73510e1..94900e123 100644
--- a/code/ryzom/client/src/client_cfg.cpp
+++ b/code/ryzom/client/src/client_cfg.cpp
@@ -1942,7 +1942,7 @@ void CClientConfig::init(const string &configFileName)
 	
 	// save the updated config file
 	NLMISC::COFile configFile(configFileName, false, true, false);
-	configFile.serialBuffer((uint8*)contentUtf8.c_str(), contentUtf8.size());
+	configFile.serialBuffer((uint8*)contentUtf8.c_str(), (uint)contentUtf8.size());
 	configFile.close();
 
 	// now we can continue loading and parsing the config file