diff --git a/zunit b/zunit
index aa2eea6..9bf6c77 100755
--- a/zunit
+++ b/zunit
@@ -118,13 +118,18 @@ function _zunit_assert_in() {
   local -a array
   array=(${(@)@:2})
 
+  local oldIFS=$IFS
+  IFS=$'\n'
+
   for i in ${(@f)array}; do
     [[ $i = $value ]] && found=1
   done
 
+
   [[ $found -eq 1 ]] && return 0
 
   echo "'$value' is not in (${(@f)array})"
+  IFS=$oldIFS
   exit 1
 }
 
@@ -136,6 +141,9 @@ function _zunit_assert_not_in() {
   local -a array
   array=(${(@)@:2})
 
+  local oldIFS=$IFS
+  IFS=$'\n'
+
   for i in ${(@f)array}; do
     [[ $i = $value ]] && found=1
   done
@@ -143,6 +151,7 @@ function _zunit_assert_not_in() {
   [[ $found -eq 0 ]] && return 0
 
   echo "'$value' is in (${(@f)array})"
+  IFS=$oldIFS
   exit 1
 }