diff --git a/cryptest.sh b/cryptest.sh
index f0d69627..66e78d56 100755
--- a/cryptest.sh
+++ b/cryptest.sh
@@ -336,6 +336,7 @@ fi
 CPU_FREQ=0.5
 if [[ (-e "/proc/cpuinfo") ]]; then
 	CPU_FREQ=$(cat /proc/cpuinfo | grep 'MHz' | head -1 | awk '{print $4}')
+	if [[ -z "$CPU_FREQ" ]]; then CPU_FREQ=512; fi
 	CPU_FREQ=$(awk "BEGIN {print $CPU_FREQ/1024}")
 elif [[ (-e "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq") ]]; then
 	CPU_FREQ=$(cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq)