diff --git a/include/Parts.hpp b/include/Parts.hpp
index 56e2306..cfbee69 100644
--- a/include/Parts.hpp
+++ b/include/Parts.hpp
@@ -171,7 +171,7 @@ class ComponentPart {
 	//! the part's bias
 	vectorf bias(size_t mixture = 0) const {
 		const int offset = (*biasid_)[self_][mixture];
-		return vectorf(&((*biasw_)[offset]), &((*biasw_)[offset+nmixtures()]));
+		return vectorf((*biasw_).begin()+offset, (*biasw_).begin()+offset+nmixtures());
 	}
 	//! the part's bias index
 	int biasi(size_t mixture = 0) const { return (*biasi_)[(*biasid_)[self_][mixture]]; }
diff --git a/src/FileStorageModel.cpp b/src/FileStorageModel.cpp
index b8ef87e..9506e8a 100644
--- a/src/FileStorageModel.cpp
+++ b/src/FileStorageModel.cpp
@@ -146,7 +146,7 @@ bool FileStorageModel::deserialize(const std::string& filename) {
 			part["biasid"]   >> biasid_[c][p];
 
 			cv::FileNode defid = part["defid"];
-			if(defid.isInt())
+			if(!defid.isNone())
 				defid >> defid_[c][p];
 			else
 				defid_[c][p].push_back(0);