diff --git a/scripts/ingest-tarball.sh b/scripts/ingest-tarball.sh
index e6f1321..a720840 100755
--- a/scripts/ingest-tarball.sh
+++ b/scripts/ingest-tarball.sh
@@ -143,7 +143,7 @@ function cvmfs_ingest_tarball() {
 
 function check_os() {
     # Check if the operating system directory is correctly set for the contents of the tarball
-    os=$(echo "${tar_first_file}" | cut -d / -f 3)
+    os=$(echo "${tar_first_file}" | cut -d / -f $(( $tar_contents_start_level + 1 )))
     if [ -z "${os}" ]
     then
         error "no operating system directory found in the tarball!"
@@ -156,7 +156,7 @@ function check_os() {
 
 function check_arch() {
     # Check if the architecture directory is correctly set for the contents of the tarball
-    arch=$(echo "${tar_first_file}" | cut -d / -f 4)
+    arch=$(echo "${tar_first_file}" | cut -d / -f $(( $tar_contents_start_level + 2 )))
     if [ -z "${arch}" ]
     then
         error "no architecture directory found in the tarball!"
@@ -258,7 +258,13 @@ version=$(echo "${tar_file_basename}" | cut -d- -f2)
 contents_type_dir=$(echo "${tar_file_basename}" | cut -d- -f3)
 tar_first_file=$(tar tf "${tar_file}" | head -n 1)
 tar_top_level_dir=$(echo "${tar_first_file}" | cut -d/ -f1)
-tar_contents_type_dir=$(tar tf "${tar_file}" | head -n 2 | tail -n 1 | cut -d/ -f2)
+# Handle longer prefix with project name in dev.eessi.io
+if [ "${cvmfs_repo}" = "dev.eessi.io" ]; then
+    tar_contents_start_level=3
+else
+    tar_contents_start_level=2
+fi
+tar_contents_type_dir=$(tar tf "${tar_file}" | head -n 2 | tail -n 1 | cut -d/ -f${tar_contents_start_level})
 
 # Check if we are running as the CVMFS repo owner, otherwise run cvmfs_server with sudo
 is_repo_owner || cvmfs_server="sudo cvmfs_server"