diff --git a/REFERENCE.md b/REFERENCE.md
index 9133ea6f8..e3090815b 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -1229,7 +1229,7 @@ Default value: `[]`
 
 ##### <a name="-keepalived--vrrp--instance--track_interface"></a>`track_interface`
 
-Data type: `Any`
+Data type: `Array[String[1]]`
 
 Define which interface(s) to monitor.
 Go to FAULT state if one of
@@ -1238,7 +1238,7 @@ May be specified as either:
   a) interface name
   b) array of interfaces names
 
-Default value: `undef`
+Default value: `[]`
 
 ##### <a name="-keepalived--vrrp--instance--lvs_interface"></a>`lvs_interface`
 
diff --git a/manifests/vrrp/instance.pp b/manifests/vrrp/instance.pp
index 7d1939cd9..19d1179e4 100644
--- a/manifests/vrrp/instance.pp
+++ b/manifests/vrrp/instance.pp
@@ -211,7 +211,7 @@
   Array[String[1]] $track_process                                         = [],
   Array[String[1]] $track_file                                            = [],
   Array[String[1]] $vrrp_track_file                                       = [],
-  $track_interface                                                        = undef,
+  Array[String[1]] $track_interface                                       = [],
   $lvs_interface                                                          = undef,
   $virtual_ipaddress_int                                                  = undef,
   $virtual_ipaddress_excluded                                             = undef,
diff --git a/templates/vrrp_instance.erb b/templates/vrrp_instance.erb
index 67b65db0a..ec4f88130 100644
--- a/templates/vrrp_instance.erb
+++ b/templates/vrrp_instance.erb
@@ -129,10 +129,10 @@ vrrp_instance <%= @_name %> {
   <%- end -%>
   }
   <%- end -%>
-  <%- if @track_interface -%>
+  <%- unless @track_interface.empty? -%>
 
   track_interface {
-  <%- Array(@track_interface).each do |interface| -%>
+  <%- @track_interface.each do |interface| -%>
     <%= interface %>
   <%- end -%>
   }