diff --git a/src/modules/dataman/dataman.h b/src/modules/dataman/dataman.h
index a29a29c735..d5e39dbfd3 100644
--- a/src/modules/dataman/dataman.h
+++ b/src/modules/dataman/dataman.h
@@ -89,7 +89,7 @@ typedef enum {
 } dm_reset_reason;
 
 /** Maximum size in bytes of a single item instance */
-#define DM_MAX_DATA_SIZE 124
+#define DM_MAX_DATA_SIZE 126
 
 /** Retrieve from the data manager store */
 __EXPORT ssize_t