diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b7484b..e9b696e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## main
 
+* fix one-byte overread into struct padding [bgilbert]
+
 ## 1.2.0, 09/04/2025
 
 * fix build with uthash \< 2.3.0 [bgilbert]
diff --git a/src/dicom-dict-tables.h b/src/dicom-dict-tables.h
index b38efcd..0fac080 100644
--- a/src/dicom-dict-tables.h
+++ b/src/dicom-dict-tables.h
@@ -68,7 +68,7 @@ typedef enum _DcmVRTag {
 struct _DcmAttribute {
     uint32_t tag;
     DcmVRTag vr_tag;
-    char keyword[63];
+    char keyword[64];
 };
 
 extern const struct _DcmAttribute dcm_attribute_table[];