diff --git a/stim/biomodels/network.h b/stim/biomodels/network.h
index b5e54c2..bfc98ce 100644
--- a/stim/biomodels/network.h
+++ b/stim/biomodels/network.h
@@ -536,9 +536,9 @@ public:
 		for(unsigned int i = 0; i < p.size(); i++){
 			ss.str(std::string());
 			for(unsigned int d = 0; d < 3; d++){
-				ss<<c[i][d];
+				ss<<p[i][d];
 			}
-			ss < "\n"
+			ss < "\n";
 		}
 		return ss.str();
 	}
@@ -552,8 +552,7 @@ public:
 	void
 	to_txt(std::string filename)
 	{
-		std::ofstream ofs;
-		ofs.open(filename, std::ofstream::out | std::ofstream::app);
+		std::ofstream ofs(filename, std::ofstream::out | std::ofstream::app);
 		int num;
 		ofs << (E.size()).str() << "\n";
 		for(unsigned int i = 0; i < E.size(); i++)
--
libgit2 0.21.4