diff --git a/scripts/sync-library.sh b/scripts/sync-library.sh
index c81e7b3..1af1660 100755
--- a/scripts/sync-library.sh
+++ b/scripts/sync-library.sh
@@ -224,14 +224,17 @@ if [[ $DRY_RUN -eq 1 ]]; then
     exit 0
 fi
 
-ssh "$SSH_TARGET" "
-    echo 'library:  '\$(du -sh '$DEST' 2>/dev/null | cut -f1)
-    echo 'free:     '\$(df -Ph '$DEST' | awk 'NR==2 {print \$4}')
-    if [ -d '${DEST}/.musicmouse-cache' ]; then
-        echo 'covers:   '\$(find '${DEST}/.musicmouse-cache/covers' -type f 2>/dev/null | wc -l)' files'
-        echo 'analysis: '\$(find '${DEST}/.musicmouse-cache/analysis' -type f 2>/dev/null | wc -l)' files'
-    fi
-"
+# Through `sh -s` rather than as an ssh command string: that string is run by the
+# remote user's login shell, and on the devices root's is fish, which rejects
+# `if ...; then`. The heredoc expands $DEST here; the escaped \$ ones run remotely.
+ssh "$SSH_TARGET" sh -s <<EOF
+echo "library:  \$(du -sh '$DEST' 2>/dev/null | cut -f1)"
+echo "free:     \$(df -Ph '$DEST' | awk 'NR==2 {print \$4}')"
+if [ -d '${DEST}/.musicmouse-cache' ]; then
+    echo "covers:   \$(find '${DEST}/.musicmouse-cache/covers' -type f 2>/dev/null | wc -l) files"
+    echo "analysis: \$(find '${DEST}/.musicmouse-cache/analysis' -type f 2>/dev/null | wc -l) files"
+fi
+EOF
 
 cat <<EOF