diff --git a/EIPS/eip-4844.md b/EIPS/eip-4844.md
index 3b305f1fb0851e..e79c3f61bc1f8f 100644
--- a/EIPS/eip-4844.md
+++ b/EIPS/eip-4844.md
@@ -122,7 +122,7 @@ The signature values `y_parity`, `r`, and `s` are calculated by constructing a s
 
 ### Header extension
 
-The current header encoding is extended with a new 256-bit unsigned integer field `excess_data_gas`. This is the running total of excess data gas consumed on chain since this EIP was activated. If the total amount of data gas is below the
+The current header encoding is extended with a new 64-bit unsigned integer field `excess_data_gas`. This is the running total of excess data gas consumed on chain since this EIP was activated. If the total amount of data gas is below the
 target, `excess_data_gas` is capped at zero.
 
 The resulting RLP encoding of the header is therefore: