diff --git a/boot/bootutil/src/image_ec256.c b/boot/bootutil/src/image_ec256.c
index f59a8f0..1e7354e 100644
--- a/boot/bootutil/src/image_ec256.c
+++ b/boot/bootutil/src/image_ec256.c
@@ -122,7 +122,7 @@
     if (rc) {
         return -1;
     }
-    if (cp + len != end) {
+    if (cp + len > end) {
         return -2;
     }
     rc = tinycrypt_read_bigint(r, &cp, end);