diff --git a/rsync/files/rsync b/rsync/files/rsync
index 2612aa1..60c8a19 100644
--- a/rsync/files/rsync
+++ b/rsync/files/rsync
@@ -28,7 +28,7 @@
 #  the rsync daemon can impact performance due to much I/O and CPU usage,
 #  so you may want to run it at a nicer priority than the default priority.
 #  Allowed values are 0 - 19 inclusive; 10 is a reasonable value.
-{%- if server.nice %}
++{%- if server.nice is defined %}
 RSYNC_NICE='{{ server.nice }}'
 {%- endif %}
 
@@ -39,7 +39,7 @@
 #  See the manpage for ionice for allowed options.
 #  -c3 is recommended, this will run rsync IO at "idle" priority. Uncomment
 #  the next line to activate this.
-{%- if server.ionice %}
++{%- if server.ionice is defined %}
 RSYNC_IONICE='{{ server.ionice }}'
 {%- endif %}