diff --git a/code/ryzom/client/src/init.cpp b/code/ryzom/client/src/init.cpp
index 4f8314bbb..3a51b82a0 100644
--- a/code/ryzom/client/src/init.cpp
+++ b/code/ryzom/client/src/init.cpp
@@ -948,14 +948,28 @@ void prelogInit()
 			return;
 		}
 
+		// used to determine screen default resolution
 		if (ClientCfg.Width < 800 || ClientCfg.Height < 600)
 		{
 			UDriver::CMode mode;
 
+			CConfigFile::CVar *varPtr = NULL;
+
 			if (!ClientCfg.Windowed && Driver->getCurrentScreenMode(mode))
 			{
 				ClientCfg.Width = mode.Width;
 				ClientCfg.Height = mode.Height;
+				ClientCfg.Depth = mode.Depth;
+				ClientCfg.Frequency = mode.Frequency;
+
+				// update client.cfg with detected depth and frequency
+				varPtr = ClientCfg.ConfigFile.getVarPtr("Depth");
+				if(varPtr)
+					varPtr->forceAsInt(ClientCfg.Depth);
+
+				varPtr = ClientCfg.ConfigFile.getVarPtr("Frequency");
+				if(varPtr)
+					varPtr->forceAsInt(ClientCfg.Frequency);
 			}
 			else
 			{
@@ -964,7 +978,7 @@ void prelogInit()
 			}
 
 			// update client.cfg with detected resolution
-			CConfigFile::CVar *varPtr = ClientCfg.ConfigFile.getVarPtr("Width");
+			varPtr = ClientCfg.ConfigFile.getVarPtr("Width");
 			if(varPtr)
 				varPtr->forceAsInt(ClientCfg.Width);