diff --git a/src/add-ons/kernel/drivers/disk/nvme/nvme_disk.cpp b/src/add-ons/kernel/drivers/disk/nvme/nvme_disk.cpp
index 18c4ec3c44..b7226363a8 100644
--- a/src/add-ons/kernel/drivers/disk/nvme/nvme_disk.cpp
+++ b/src/add-ons/kernel/drivers/disk/nvme/nvme_disk.cpp
@@ -923,7 +923,7 @@ nvme_disk_trim(nvme_disk_driver_info* info, fs_trim_data* trimData)
 		dsmRanges[i].length = length / info->block_size;
 		dsmRanges[i].starting_lba = offset / info->block_size;
 
-		trimmingSize += dsmRanges[i].length;
+		trimmingSize += length;
 	}
 
 	status_t status = EINPROGRESS;