diff --git a/src/cpu.cpp b/src/cpu.cpp
index 8052fdf..69600eb 100644
--- a/src/cpu.cpp
+++ b/src/cpu.cpp
@@ -43,11 +43,11 @@ void update(cpuSensors* c) {
     }
 
     // lots of reads but still faster than reading /proc/cpuinfo
-    char buf[5];
+    char buf[8];
     c->avg_freq = 0;
     for (uint8_t i = 0; i < N_CPU; i++) {
         readFile2("/sys/devices/system/cpu/cpu" + std::to_string(i) + "/cpufreq/cpuinfo_avg_freq", buf, sizeof(buf));
-        c->avg_freq += strtol(buf, NULL, 10);
+        c->avg_freq += strtol(buf, NULL, 10) / 1000;
     }
     c->avg_freq /= N_CPU;
 }