diff --git a/fs/read_write.c b/fs/read_write.c
index 1f8dc37..0642a16 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -37,10 +37,10 @@
 
 	mutex_lock(&inode->i_mutex);
 	switch (origin) {
-		case 2:
+		case SEEK_END:
 			offset += inode->i_size;
 			break;
-		case 1:
+		case SEEK_CUR:
 			offset += file->f_pos;
 	}
 	retval = -EINVAL;
@@ -63,10 +63,10 @@
 
 	lock_kernel();
 	switch (origin) {
-		case 2:
+		case SEEK_END:
 			offset += i_size_read(file->f_path.dentry->d_inode);
 			break;
-		case 1:
+		case SEEK_CUR:
 			offset += file->f_pos;
 	}
 	retval = -EINVAL;
@@ -94,10 +94,10 @@
 
 	lock_kernel();
 	switch (origin) {
-		case 2:
+		case SEEK_END:
 			offset += i_size_read(file->f_path.dentry->d_inode);
 			break;
-		case 1:
+		case SEEK_CUR:
 			offset += file->f_pos;
 	}
 	retval = -EINVAL;