diff --git a/gamemodes/penls.pwn b/gamemodes/penls.pwn
index 568d90b..87dbc47 100644
--- a/gamemodes/penls.pwn
+++ b/gamemodes/penls.pwn
@@ -7646,7 +7646,7 @@ public LoadPlayer(loaderid,const string[])
 	new string2[64];
 	new loaded = loaderid;
 	new valtmp[128];
-	format(string2, sizeof(string2), "%s.cer", string);
+	format(string2, sizeof(string2), "%s.cer", strlower(string));
 	new File: file = fopen(string2, io_read);
 	if (file)
 	{
@@ -7701,7 +7701,7 @@ public SavePlayer(loaderid,const string[])
 {
 	new string3[32];
 	new saved = loaderid;
-	format(string3, sizeof(string3), "%s.cer", string);
+	format(string3, sizeof(string3), "%s.cer", strlower(string));
 	new File: pFile = fopen(string3, io_write);
 	if (pFile)
 	{
@@ -7765,7 +7765,7 @@ public OnPlayerLogin(playerid,const string[])
 	}
 	*/
 	GetPlayerName(playerid, playername2, sizeof(playername2));
-	format(string2, sizeof(string2), "%s.cer", playername2);
+	format(string2, sizeof(string2), "%s.cer", strlower(playername2));
 	new File: file = fopen(string2, io_read);
 	if (file)
 	{
@@ -7927,7 +7927,7 @@ public PlayerUpdate(playerid)
 		new string3[32];
 		new playername3[MAX_PLAYER_NAME];
 		GetPlayerName(playerid, playername3, sizeof(playername3));
-		format(string3, sizeof(string3), "%s.cer", playername3);
+		format(string3, sizeof(string3), "%s.cer", strlower(playername3));
 		new File: pFile = fopen(string3, io_write);
 		if (gdebug){printf("DEBUG PlayerUpdate(%d)8.5", playerid);}
 		if (pFile)
@@ -8005,14 +8005,14 @@ public OnPlayerRename(name[],string[],playerid)
 	if (gdebug >= 1){printf("DEBUG OnPlayerRename(%d)", playerid);}
 	if (gPlayerLogged[playerid] != 0)
 	{
-		new File: pFile = fopen(string, io_write);
+		new File: pFile = fopen(strlower(string), io_write);
 		if (gdebug){printf("DEBUG PlayerUpdate(%d)8.5", playerid);}
 		if (pFile)
 		{
 			new var[32];
 			format(var, 32, "%s\n", PlayerInfo[playerid][pPassword]);fwrite(pFile, var);
 			fclose(pFile);
-			new File: hFile = fopen(string, io_append);
+			new File: hFile = fopen(strlower(string), io_append);
 //			PlayerInfo[playerid][pCash] = GetPlayerMoney(playerid);
 			format(var, 32, "%d pCash\n",PlayerInfo[playerid][pCash]);fwrite(hFile, var);
 			format(var, 32, "%d pAccount\n",PlayerInfo[playerid][pAccount]);fwrite(hFile, var);
@@ -8832,7 +8832,7 @@ public OnPlayerCommandText(playerid, cmdtext[])
 			GameTextForPlayerRus(playerid, "~w~Now Select a character and type /login <your password>", 10000, 3);*/
 		strmid(PlayerInfo[playerid][pPassword], tmp, 0, strlen(cmdtext), 255);
 		GetPlayerName(playerid, playername, sizeof(playername));
-		format(string, sizeof(string), "%s.cer", playername);
+		format(string, sizeof(string), "%s.cer", strlower(playername));
 		PlayerInfo[playerid][pCash] = GetPlayerMoney(playerid);
 		new File: file = fopen(string, io_read);
 		if (file)
diff --git a/include/rus_text.inc b/include/rus_text.inc
index ef8a29e..026ad31 100644
--- a/include/rus_text.inc
+++ b/include/rus_text.inc
@@ -90,3 +90,21 @@ public FixRus(string[])
 	}
 	return 1;
 }
+
+stock strlower(txt[])
+{
+    new tmp[MAX_TEXTSTR];
+    tmp[0]=0;
+    if (txt[0]==0) return tmp;
+    new i=0;
+    for (i=0;i<strlen(txt);i++) {
+        if(txt[i] >= 'A' && txt[i] <= 'Z' || txt[i] >= 'À' && txt[i] <= 'ß')
+			tmp[i] = txt[i] + 32;
+		else if(txt[i] == '¨')
+			tmp[i] = '¸';
+		else
+			tmp[i] = txt[i];
+    }
+    tmp[strlen(txt)]=0;
+    return tmp;
+}
\ No newline at end of file