Index: src/base64.m
==================================================================
--- src/base64.m
+++ src/base64.m
@@ -57,22 +57,22 @@
 		tb[0] = of_base64_encode_table[(sb & 0xFC0000) >> 18];
 		tb[1] = of_base64_encode_table[(sb & 0x03F000) >> 12];
 		tb[2] = of_base64_encode_table[(sb & 0x000FC0) >> 6];
 		tb[3] = of_base64_encode_table[sb & 0x00003F];
 
-		[ret appendCStringWithoutUTF8Checking: tb
-					       length: 4];
+		[ret appendCString: tb
+			withLength: 4];
 	}
 
 	switch (rest) {
 	case 1:
 		tb[0] = of_base64_encode_table[buffer[i] >> 2];
 		tb[1] = of_base64_encode_table[(buffer[i] & 3) << 4];
 		tb[2] = tb[3] = '=';
 
-		[ret appendCStringWithoutUTF8Checking: tb
-					       length: 4];
+		[ret appendCString: tb
+			withLength: 4];
 
 		break;
 	case 2:
 		sb = (buffer[i] << 16) | (buffer[i + 1] << 8);
 
@@ -79,12 +79,12 @@
 		tb[0] = of_base64_encode_table[(sb & 0xFC0000) >> 18];
 		tb[1] = of_base64_encode_table[(sb & 0x03F000) >> 12];
 		tb[2] = of_base64_encode_table[(sb & 0x000FC0) >> 6];
 		tb[3] = '=';
 
-		[ret appendCStringWithoutUTF8Checking: tb
-					       length: 4];
+		[ret appendCString: tb
+			withLength: 4];
 
 		break;
 	}
 
 	/*