diff --git a/tools/INSTALL.sh b/tools/INSTALL.sh
index e56227a9..e8a9ec99 100755
--- a/tools/INSTALL.sh
+++ b/tools/INSTALL.sh
@@ -99,17 +99,13 @@ if [ $pyft -eq 1 ]; then
     else
       #Update
       cd pyft
-      if ! git rev-parse ${pyft_version}^{commit} > /dev/null 2>&1; then
-        if [ $ssh -eq 1 ]; then
-          git fetch git@github.com:UMR-CNRM/pyft.git
-        else
-          git fetch https://github.com/UMR-CNRM/pyft.git
-        fi
+      if [ $ssh -eq 1 ]; then
+        git fetch --tags git@github.com:UMR-CNRM/pyft.git
+      else
+        git fetch --tags https://github.com/UMR-CNRM/pyft.git
       fi
     fi
-    if [ $(git rev-parse HEAD^{commit}) != $(git rev-parse ${pyft_version}^{commit}) ]; then
-      git checkout ${pyft_version}
-    fi
+    git checkout ${pyft_version}
     cd ..
     #Install/update
     if [ $ssh -eq 1 ]; then