diff --git a/bin/install_tool b/bin/install_tool
index 4c0aefd..cc6c17e 100755
--- a/bin/install_tool
+++ b/bin/install_tool
@@ -110,6 +110,14 @@ function makedest_or_die {
   makedest || die "Aborting."
 }
 
+function deb_only {
+  # Error if not on a debian or derivative
+  if ! test -f /etc/debian_version ; then
+    echo "This tool only available for debian." >&2
+    exit 1
+  fi
+}
+
 # Begin main tool selection
 case ${TOOL} in
   john)
@@ -323,6 +331,7 @@ case ${TOOL} in
     add_bin_symlink "Cura.AppImage" cura
     ;;
   rr)
+    deb_only
     ver=$(python3 -c 'from urllib import request; import json; print(json.load(request.urlopen("https://api.github.com/repos/mozilla/rr/releases/latest"))["name"])')
     echo "Latest rr is ${ver}"
     download \
@@ -433,7 +442,8 @@ EOF
     cargo install bottom
     ;;
   delta)
-    if !check_sudo ; then
+    deb_only
+    if ! check_sudo ; then
       echo "Must be able to run as sudo."
       exit 1
     fi