diff --git a/common/cow_operation_convert.cc b/common/cow_operation_convert.cc
index a8f7541..adbfb7d 100644
--- a/common/cow_operation_convert.cc
+++ b/common/cow_operation_convert.cc
@@ -24,23 +24,14 @@
 
 namespace chromeos_update_engine {
 
-namespace {
-
-bool IsConsecutive(const CowOperation& op1, const CowOperation& op2) {
-  return op1.op == op2.op && op1.dst_block + op1.block_count == op2.dst_block &&
-         op1.src_block + op1.block_count == op2.src_block;
-}
-
 void push_back(std::vector<CowOperation>* converted, const CowOperation& op) {
   if (!converted->empty() && IsConsecutive(converted->back(), op)) {
-    converted->back().block_count++;
+    converted->back().block_count += op.block_count;
   } else {
     converted->push_back(op);
   }
 }
 
-}  // namespace
-
 std::vector<CowOperation> ConvertToCowOperations(
     const ::google::protobuf::RepeatedPtrField<
         ::chromeos_update_engine::InstallOperation>& operations,
diff --git a/common/cow_operation_convert.h b/common/cow_operation_convert.h
index 60c820f..a260a4a 100644
--- a/common/cow_operation_convert.h
+++ b/common/cow_operation_convert.h
@@ -29,7 +29,7 @@
     CowCopy = android::snapshot::kCowCopyOp,
     CowReplace = android::snapshot::kCowReplaceOp,
   };
-  Type op;
+  Type op{};
   uint64_t src_block{};
   uint64_t dst_block{};
   uint64_t block_count{1};
@@ -53,5 +53,13 @@
         ::chromeos_update_engine::InstallOperation>& operations,
     const ::google::protobuf::RepeatedPtrField<CowMergeOperation>&
         merge_operations);
+
+constexpr bool IsConsecutive(const CowOperation& op1, const CowOperation& op2) {
+  return op1.op == op2.op && op1.dst_block + op1.block_count == op2.dst_block &&
+         op1.src_block + op1.block_count == op2.src_block;
+}
+
+void push_back(std::vector<CowOperation>* converted, const CowOperation& op);
+
 }  // namespace chromeos_update_engine
 #endif