1 files changed, 2 insertions, 2 deletions
diff --git a/src/io.h b/src/io.h
index 1c187b8..c65a2b0 100644
--- a/src/io.h
+++ b/src/io.h
@@ -32,8 +32,8 @@
 
 using namespace std;
 
-void ProgressBar(string str, double p, double total);
-void ProgressBar(string str, double p, double total, double ratio);
+void ProgressBar(string str, double p, double total, double ratio = -1.0);
+
 std::istream &safeGetline(std::istream &is, std::string &t);
 
 bool ReadFile_snps(const string file_snps, set<string> &setSnps);