diff --git a/scripts/ynh_docker_image_extract b/scripts/ynh_docker_image_extract
index 9a753ca..c98337d 100644
--- a/scripts/ynh_docker_image_extract
+++ b/scripts/ynh_docker_image_extract
@@ -71,7 +71,7 @@ ynh_setup_source_docker() {
     src_format=${src_format:-tar.gz}
     src_format=$(echo "$src_format" | tr '[:upper:]' '[:lower:]')
     src_extract=${src_extract:-true}
-    if [[ "$src_filename" = "" && "$src_format" != "docker" ]]; then
+    if [ "$src_filename" = "" ]; then
         src_filename="${source_id}.${src_format}"
     fi
 
@@ -81,27 +81,24 @@ ynh_setup_source_docker() {
     mkdir -p /var/cache/yunohost/download/${YNH_APP_ID}/
     src_filename="/var/cache/yunohost/download/${YNH_APP_ID}/${src_filename}"
 
-	if [ "$src_format" = "docker" ]; then
-	    src_plateform="${src_plateform:-"linux/$YNH_ARCH"}"
-	else
-	    if test -e "$local_src"; then
-	        cp $local_src $src_filename
-	    else
-	        [ -n "$src_url" ] || ynh_die "Couldn't parse SOURCE_URL from $src_file_path ?"
-	
-	        # NB. we have to declare the var as local first,
-	        # otherwise 'local foo=$(false) || echo 'pwet'" does'nt work
-	        # because local always return 0 ...
-	        local out
-	        # Timeout option is here to enforce the timeout on dns query and tcp connect (c.f. man wget)
-	        out=$(wget --tries 3 --no-dns-cache --timeout 900 --no-verbose --output-document=$src_filename $src_url 2>&1) \
-	            || ynh_die --message="$out"
-	    fi
-	
-	    # Check the control sum
-	    echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status \
-	        || ynh_die --message="Corrupt source"
-	fi
+    if [ "$src_format" = "docker" ]; then
+        src_plateform="${src_plateform:-"linux/$YNH_ARCH"}"
+    elif test -e "$local_src"; then
+        cp $local_src $src_filename
+    else
+        [ -n "$src_url" ] || ynh_die "Couldn't parse SOURCE_URL from $src_file_path ?"
+
+        # NB. we have to declare the var as local first,
+        # otherwise 'local foo=$(false) || echo 'pwet'" does'nt work
+        # because local always return 0 ...
+        local out
+        # Timeout option is here to enforce the timeout on dns query and tcp connect (c.f. man wget)
+        out=$(wget --tries 3 --no-dns-cache --timeout 900 --no-verbose --output-document=$src_filename $src_url 2>&1) \
+            || ynh_die --message="$out"
+        # Check the control sum
+        echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status \
+            || ynh_die --message="Corrupt source"
+    fi
 
     # Keep files to be backup/restored at the end of the helper
     # Assuming $dest_dir already exists