diff --git a/CHANGES b/CHANGES
index 2605557..1e527af 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,7 @@ i2c-tools CHANGES
 SVN
   i2c-dev.h: Drop I2C_FUNC_SMBUS_*I2C_BLOCK_2 defines
   decode-dimms: Add support for little-endian word hexdumps
+                Only export the ceil function from POSIX
   decode-vaio: Remove history
   i2cdetect: Support i2c bus passed by name
              Shorten the usage message
diff --git a/eeprom/decode-dimms b/eeprom/decode-dimms
index 3146c0a..82a94ee 100755
--- a/eeprom/decode-dimms
+++ b/eeprom/decode-dimms
@@ -38,7 +38,7 @@
 require 5.004;
 
 use strict;
-use POSIX;
+use POSIX qw(ceil);
 use Fcntl qw(:DEFAULT :seek);
 use vars qw($opt_html $opt_bodyonly $opt_igncheck $use_sysfs $use_hexdump
 	    @vendors %decode_callback $revision @dimm_list %hexdump_cache);