diff --git a/README.md b/README.md
index 47dc68f..34cf45b 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,11 @@ All mechanism of conversion is based on [fast-export](https://github.com/frej/fa
 # Launch conversion
 
     docker run -it -v ~/anyproject-hg:/work/projectname -v ~/project-result-git:/work/result lroche/hg2git projectname
+
+or if you don't want to specifiy projectname:
+
+     docker run -it -v ~/anyproject-hg:/work/project -v ~/project-result-git:/work/result lroche/hg2git
+
     
 the run uses two bound volumes, one for hg source, other for git target result.
 the name of project has no matter but it will be the same between /work/projectname and the argument of the command (here projectname)
diff --git a/hg2git.sh b/hg2git.sh
index 44a1980..3d96838 100644
--- a/hg2git.sh
+++ b/hg2git.sh
@@ -1,6 +1,10 @@
 #!/bin/bash
 
 PROJECT_NAME=$1
+if [ $PROJECT_NAME -eq ""];
+then
+    PROJECT_NAME="project"
+fi
 
 cd /work/result
 mkdir -p $PROJECT_NAME-git