Oops! This was erroneously left out commit #16632.
diff --git a/ssl/dtls1.h b/ssl/dtls1.h
index fdf9705..f95c91c 100644
--- a/ssl/dtls1.h
+++ b/ssl/dtls1.h
@@ -83,7 +83,7 @@
 #define DTLS1_HM_BAD_FRAGMENT                   -2
 #define DTLS1_HM_FRAGMENT_RETRY                 -3
 
-#define DTLS1_CCS_HEADER_LENGTH                  3
+#define DTLS1_CCS_HEADER_LENGTH                  1
 
 #define DTLS1_AL_HEADER_LENGTH                   7