diff --git a/scripts/install_fiji.bash b/scripts/install_fiji.bash
index 89890f4..4961264 100755
--- a/scripts/install_fiji.bash
+++ b/scripts/install_fiji.bash
@@ -1,4 +1,16 @@
 #!/bin/bash
-wget 'https://downloads.imagej.net/fiji/latest/fiji-linux64.zip'
-unzip './fiji-linux64.zip'
-rm './fiji-linux64.zip'
+DOWNLOAD_FIJI_LATEST_VERSION='false'
+if [ "$DOWNLOAD_FIJI_LATEST_VERSION" = 'true' ]
+then
+    wget 'https://downloads.imagej.net/fiji/latest/fiji-linux64.zip'
+    unzip './fiji-linux64.zip'
+    rm './fiji-linux64.zip'
+else
+    # use the version downloaded with :
+    # graffy@physix-frontal:/opt/ipr/cluster/work.global/graffy/jenkins-store/lipase$ wget 'https://downloads.imagej.net/fiji/latest/fiji-linux64.zip'
+    # graffy@physix-frontal:/opt/ipr/cluster/work.global/graffy/jenkins-store/lipase$ mv fiji-linux64.zip ./fiji-linux64-2019-07-02.zip
+    # note : the date of the package is visible on https://downloads.imagej.net/fiji/latest/
+    FIJI_PACKAGE_FILE_PATH='/opt/ipr/cluster/work.global/graffy/jenkins-store/lipase/fiji-linux64-2019-07-02.zip'
+    echo "using pre-downloaded fiji package $FIJI_PACKAGE_FILE_PATH"
+    unzip "$FIJI_PACKAGE_FILE_PATH"
+fi