diff --git a/servers/ext2/const.h b/servers/ext2/const.h
index a939716f0..6a511cafd 100644
--- a/servers/ext2/const.h
+++ b/servers/ext2/const.h
@@ -3,7 +3,10 @@
 
 /* Tables sizes */
 
-#define NR_INODES        256    /* # slots in "in core" inode table */
+#define NR_INODES        512    /* # slots in "in core" inode table;
+				 * should be more or less the same as
+				 * NR_VNODES in vfs
+				 */
 #define GETDENTS_BUFSIZ  257
 
 #define INODE_HASH_LOG2   7     /* 2 based logarithm of the inode hash size */
diff --git a/servers/mfs/const.h b/servers/mfs/const.h
index 4ec9a5efa..8d88fbf1a 100644
--- a/servers/mfs/const.h
+++ b/servers/mfs/const.h
@@ -7,7 +7,10 @@
 #define V2_NR_DZONES       7	/* # direct zone numbers in a V2 inode */
 #define V2_NR_TZONES      10	/* total # zone numbers in a V2 inode */
 
-#define NR_INODES        256	/* # slots in "in core" inode table */
+#define NR_INODES        512	/* # slots in "in core" inode table,
+				 * should be more or less the same as
+				 * NR_VNODES in vfs
+				 */
 #define GETDENTS_BUFSIZ  257
 
 #define INODE_HASH_LOG2   7     /* 2 based logarithm of the inode hash size */