diff --git a/CHANGES b/CHANGES
index 3397203..0662a03 100644
--- a/CHANGES
+++ b/CHANGES
@@ -22,6 +22,7 @@ SVN HEAD
                 Remove duplicate "ns" in SDR timings
                 Add section headers for SDR modules
                 Fix decoding of SDR SPD revision
+                Prevent hang on reserved DDR3 module type
   i2cdetect: Do a best effort detection if functionality is missing
              Clarify the SMBus commands used for probing by default
   i2c-dev.h: Minimize differences with kernel flavor
diff --git a/eeprom/decode-dimms b/eeprom/decode-dimms
index 7f441a3..6bbdd17 100755
--- a/eeprom/decode-dimms
+++ b/eeprom/decode-dimms
@@ -1341,7 +1341,7 @@ sub decode_ddr3_sdram($)
 
 	printl("Module Type", ($bytes->[3] <= $#module_types) ?
 					$module_types[$bytes->[3]] :
-					sprint("Reserved (0x%.2X)", $bytes->[3]));
+					sprintf("Reserved (0x%.2X)", $bytes->[3]));
 
 # speed
 	prints("Memory Characteristics");