diff --git a/ansible/roles/cpu/files/cpu_set_perf_perc_freebsd b/ansible/roles/cpu/files/cpu_set_perf_perc_freebsd
index 28ad2f9..195711b 100644
--- a/ansible/roles/cpu/files/cpu_set_perf_perc_freebsd
+++ b/ansible/roles/cpu/files/cpu_set_perf_perc_freebsd
@@ -7,6 +7,12 @@ IFS=$'\n\t'
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 perc=$1
+if [ "$perc" -gt 100 ]; then
+    perc=100
+fi
+if [ "$perc" -lt 0 ]; then
+    perc=0
+fi
 epp=$((100 - perc))
 
 sysctl -N dev.hwpstate_intel | grep -E 'dev.hwpstate_intel.[0-9]+.epp' | while read var; do