diff --git a/linux/libcmt/include/libcmt/rollup.h b/linux/libcmt/include/libcmt/rollup.h
index 17034edc..c33ad9c5 100644
--- a/linux/libcmt/include/libcmt/rollup.h
+++ b/linux/libcmt/include/libcmt/rollup.h
@@ -128,9 +128,9 @@ cmt_rollup_emit_report(cmt_rollup_t *me
  * - 0 success
  * - -ENOBUFS no space left in @p me */
 int
-cmt_rollup_emit_report(cmt_rollup_t *me
-                      ,size_t n
-                      ,const void *data);
+cmt_rollup_emit_exception(cmt_rollup_t *me
+                         ,size_t n
+                         ,const void *data);
 
 /** read advance state
  *
diff --git a/linux/libcmt/src/merkle.c b/linux/libcmt/src/merkle.c
index 834a6259..6e5cf6d0 100644
--- a/linux/libcmt/src/merkle.c
+++ b/linux/libcmt/src/merkle.c
@@ -105,7 +105,7 @@ int cmt_merkle_push_back(cmt_merkle_t *me, uint8_t hash[CMT_KECCAK_LENGTH])
 	if (me->leaf_count == UINT64_MAX)
 		return -ENOBUFS;
 
-	unsigned n = ((uint64_t)ffsll(++me->leaf_count)-1u);
+	unsigned n = (uint64_t)ffsll(++me->leaf_count) - 1u;
 	for (unsigned i=0; i<n; ++i)
 		hash2(me->state[i], hash, hash);
 	memcpy(me->state[n], hash, CMT_KECCAK_LENGTH);