Remove all warnings from source code

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Openings.cpp b/src/Openings.cpp
index 02a0ba5..d3b6bcc 100644
--- a/src/Openings.cpp
+++ b/src/Openings.cpp
@@ -88,7 +88,7 @@ void Openings::LoadVolume(const std::string &tsv, Volume *vol){
     std::string line;    
     while (std::getline(f, line)) {
         int eco=-1,name=-1,pgn=-1;
-        for(int i=0;i<line.size();i++){
+        for(std::size_t i=0;i<line.size();i++){
             if(line[i]=='\t'){
                 if(eco == -1)
                     eco=i-1;