diff --git a/install/install.sh b/install/install.sh
index 77df24aa..6936ba7b 100755
--- a/install/install.sh
+++ b/install/install.sh
@@ -263,7 +263,7 @@ confirm() {
 }
 
 check_bin_dir() {
-  bin_dir="$1"
+  bin_dir="${1%/}"
 
   if [ ! -d "$BIN_DIR" ]; then
     error "Installation location $BIN_DIR does not appear to be a directory"
@@ -276,7 +276,7 @@ check_bin_dir() {
   good=$(
     IFS=:
     for path in $PATH; do
-      if [ "${path}" = "${bin_dir}" ]; then
+      if [ "${path%/}" = "${bin_dir}" ]; then
         printf 1
         break
       fi