diff --git a/install.sh b/install.sh
index 8bbdd16..f366815 100755
--- a/install.sh
+++ b/install.sh
@@ -2,7 +2,7 @@
 set -e
 
 resolve_link() {
-  $(type -p greadlink readlink | head -1) "$1"
+  $(type -p greadlink readlink | head -n1) "$1"
 }
 
 abs_dirname() {
diff --git a/libexec/bats b/libexec/bats
index 71f392f..52ebd91 100755
--- a/libexec/bats
+++ b/libexec/bats
@@ -27,7 +27,7 @@ help() {
 }
 
 resolve_link() {
-  $(type -p greadlink readlink | head -1) "$1"
+  $(type -p greadlink readlink | head -n1) "$1"
 }
 
 abs_dirname() {