diff --git a/test/compat.sh b/test/compat.sh
index e261caa..d57d6ea 100644
--- a/test/compat.sh
+++ b/test/compat.sh
@@ -133,6 +133,30 @@ assert_eq "1" "$(snapshot_count)" \
     "--keep-last 1 leaves exactly one snapshot"
 stop_container
 
+echo
+echo "=== compat: RESTIC_JOB_ARGS ==="
+# backup-last.log only records the variable, it does not prove restic ever saw
+# it. The arguments have to have a visible effect, otherwise a backup that
+# silently drops RESTIC_JOB_ARGS still looks healthy.
+
+start_container jobargs -e "RESTIC_JOB_ARGS=--exclude=/data/skipme.txt"
+wait_for_start || { fail "container starts with RESTIC_JOB_ARGS"; summary "compat"; exit 1; }
+write_file /data/keep.txt "keep"
+write_file /data/skipme.txt "skip"
+jobargs_log="$(in_container /bin/backup 2>&1)"
+assert_contains "$jobargs_log" "Backup Successful" \
+    "backup with RESTIC_JOB_ARGS succeeds"
+in_container restic restore latest --target /tmp/restore >/dev/null 2>&1
+assert_eq "keep" "$(in_container cat /tmp/restore/data/keep.txt 2>&1)" \
+    "RESTIC_JOB_ARGS does not break a normal backup"
+if in_container test -f /tmp/restore/data/skipme.txt; then
+    fail "RESTIC_JOB_ARGS is passed to restic backup" \
+        "the excluded file was backed up anyway"
+else
+    pass "RESTIC_JOB_ARGS is passed to restic backup"
+fi
+stop_container
+
 echo
 echo "=== compat: BACKUP_SOURCES ==="
 
diff --git a/test/features.sh b/test/features.sh
index 7a98232..ca38d6f 100644
--- a/test/features.sh
+++ b/test/features.sh
@@ -40,6 +40,24 @@ if require_feature stream "PR #109"; then
     fi
     stop_container
 
+    # Blocker 1 of PR #109: the stream branch must honour RESTIC_JOB_ARGS, the
+    # same way the file backup does. --host is used because it is visible in
+    # the snapshot metadata of a stdin backup.
+    start_container stream-jobargs \
+        -e RESTIC_STREAM=1 \
+        -e "RESTIC_STREAM_CMD=echo hello-stream" \
+        -e RESTIC_STREAM_FILENAME=stream.txt \
+        -e "RESTIC_JOB_ARGS=--host=jobargshost"
+    if wait_for_start; then
+        in_container /bin/backup >/dev/null 2>&1
+        stream_snapshots="$(in_container restic snapshots --json 2>/dev/null)"
+        assert_contains "$stream_snapshots" '"jobargshost"' \
+            "RESTIC_JOB_ARGS is passed to the stream backup"
+    else
+        fail "stream RESTIC_JOB_ARGS container starts"
+    fi
+    stop_container
+
     # A half-configured stream must not look like a successful backup.
     start_container stream-misconfigured -e RESTIC_STREAM=1
     if wait_for_start; then