diff --git a/drivers/sdcard/sdcard.py b/drivers/sdcard/sdcard.py
index 89d5d13ab4..fe402f7457 100644
--- a/drivers/sdcard/sdcard.py
+++ b/drivers/sdcard/sdcard.py
@@ -97,7 +97,7 @@ class SDCard:
         csd = bytearray(16)
         self.readinto(csd)
         if csd[0] & 0xc0 == 0x40: # CSD version 2.0
-            self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 2014
+            self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 1024
         elif csd[0] & 0xc0 == 0x00: # CSD version 1.0 (old, <=2GB)
             c_size = csd[6] & 0b11 | csd[7] << 2 | (csd[8] & 0b11000000) << 4
             c_size_mult = ((csd[9] & 0b11) << 1) | csd[10] >> 7