diff --git a/install b/install
index 6ee4979..5694848 100755
--- a/install
+++ b/install
@@ -5,10 +5,11 @@ if [ -d $objDir ]
 then
     cwd=`pwd`
     chmod +x ./ofCmakeConfig
+    chmod +x ./occ
     rm -f $objDir/ofCmakeConfig $objDir/occ
     ln -s $cwd/ofCmakeConfig $objDir/
     ln -s $cwd/occ $objDir/
     echo "installed ofCmakeConfig"
 else
     echo "please active OpenFOAM environment"
-fi
\ No newline at end of file
+fi
diff --git a/occ b/occ
old mode 100644
new mode 100755