diff --git a/Geo/GModelIO_MSH.cpp b/Geo/GModelIO_MSH.cpp
index 22ecb854d80c12e025e134734d595e52a180bc3c..34bf1fe3e278b330611e5a936375d2f8df6ecc7e 100644
--- a/Geo/GModelIO_MSH.cpp
+++ b/Geo/GModelIO_MSH.cpp
@@ -601,7 +601,7 @@ int GModel::writeMSH(const std::string &name, double version, bool binary,
   fprintf(fp, "$EndElements\n");
 
   //save periodic nodes
-  writeMSHPeriodicNodes (fp,entities);
+  writeMSHPeriodicNodes(fp, entities);
 
   fclose(fp);