diff --git a/.travis.yml b/.travis.yml
index 4ffc106..2be84e4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+---
 dist: bionic
 language: bash
 cache:
@@ -10,4 +11,4 @@ script:
   > /dev/null || true"
 - sudo chmod +x /opt/shellcheck/shellcheck
 - "/opt/shellcheck/shellcheck --version"
-- "/opt/shellcheck/shellcheck install-zfs.sh"
+- "/opt/shellcheck/shellcheck $(grep -lzP '^#!/bin/\\w+sh' -r .)"
diff --git a/demo/source/convert.sh b/demo/source/convert.sh
index 59da24c..8e0b8e1 100755
--- a/demo/source/convert.sh
+++ b/demo/source/convert.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-source_dir=$(readlink -f $(dirname "$0"))
+source_dir=$(readlink -f "$(dirname "$0")")
 demo_dir=$(dirname "$source_dir")
 
 (for f in "$source_dir"/*.webm; do echo "file '$f'"; done) | ffmpeg -f concat -safe 0 -i /dev/stdin -vf "fps=2,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" "$demo_dir/demo.gif" -y
diff --git a/install-zfs.sh b/install-zfs.sh
index 6477d74..549eb2b 100755
--- a/install-zfs.sh
+++ b/install-zfs.sh
@@ -935,6 +935,8 @@ function create_pools {
   #
   # Stdin is ignored if the encryption is not set (and set via prompt).
   #
+  # shellcheck disable=SC2086 # quoting $v_pools_raid_type; barring invalid user input, the values are guaranteed not to
+  # need quoting.
   zpool create \
     "${encryption_options[@]}" \
     "${v_rpool_tweaks[@]}" \
@@ -944,6 +946,7 @@ function create_pools {
 
   # `-d` disable all the pool features (not used here);
   #
+  # shellcheck disable=SC2086 # see above
   zpool create \
     "${v_bpool_tweaks[@]}" \
     -O devices=off -O mountpoint=/boot -R "$c_zfs_mount_dir" -f \