diff --git a/sdk/lib/fslib/vfatlib/fat12.c b/sdk/lib/fslib/vfatlib/fat12.c
index bf96f8d2ec3..1668fc4670e 100644
--- a/sdk/lib/fslib/vfatlib/fat12.c
+++ b/sdk/lib/fslib/vfatlib/fat12.c
@@ -38,8 +38,7 @@ Fat12WriteBootSector(IN HANDLE FileHandle,
     RtlZeroMemory(NewBootSector, BootSector->BytesPerSector);
 
     /* Copy FAT16 BPB to new bootsector */
-    memcpy(&NewBootSector->Jump[0],
-           &BootSector->Jump[0],
+    memcpy(NewBootSector, BootSector,
            FIELD_OFFSET(FAT16_BOOT_SECTOR, Res2) - FIELD_OFFSET(FAT16_BOOT_SECTOR, Jump));
            /* FAT16 BPB length (up to (not including) Res2) */
 
diff --git a/sdk/lib/fslib/vfatlib/fat16.c b/sdk/lib/fslib/vfatlib/fat16.c
index 1438532390b..ac383115471 100644
--- a/sdk/lib/fslib/vfatlib/fat16.c
+++ b/sdk/lib/fslib/vfatlib/fat16.c
@@ -38,8 +38,7 @@ Fat16WriteBootSector(IN HANDLE FileHandle,
     RtlZeroMemory(NewBootSector, BootSector->BytesPerSector);
 
     /* Copy FAT16 BPB to new bootsector */
-    memcpy(&NewBootSector->Jump[0],
-           &BootSector->Jump[0],
+    memcpy(NewBootSector, BootSector,
            FIELD_OFFSET(FAT16_BOOT_SECTOR, Res2) - FIELD_OFFSET(FAT16_BOOT_SECTOR, Jump));
            /* FAT16 BPB length (up to (not including) Res2) */
 
diff --git a/sdk/lib/fslib/vfatlib/fat32.c b/sdk/lib/fslib/vfatlib/fat32.c
index 1987af4fdde..4e789372d44 100644
--- a/sdk/lib/fslib/vfatlib/fat32.c
+++ b/sdk/lib/fslib/vfatlib/fat32.c
@@ -38,8 +38,7 @@ Fat32WriteBootSector(IN HANDLE FileHandle,
     RtlZeroMemory(NewBootSector, BootSector->BytesPerSector);
 
     /* Copy FAT32 BPB to new bootsector */
-    memcpy(&NewBootSector->Jump[0],
-           &BootSector->Jump[0],
+    memcpy(NewBootSector, BootSector,
            FIELD_OFFSET(FAT32_BOOT_SECTOR, Res2) - FIELD_OFFSET(FAT32_BOOT_SECTOR, Jump));
            /* FAT32 BPB length (up to (not including) Res2) */