diff --git a/src/detection/cpu/cpu_bsd.c b/src/detection/cpu/cpu_bsd.c
index e1d647cd3..70623cbff 100644
--- a/src/detection/cpu/cpu_bsd.c
+++ b/src/detection/cpu/cpu_bsd.c
@@ -11,7 +11,8 @@ const char* ffDetectCPUImpl(const FFCPUOptions* options, FFCPUResult* cpu)
     cpu->coresLogical = cpu->coresPhysical;
     cpu->coresOnline = cpu->coresPhysical;
 
-    cpu->frequencyBase = ffSysctlGetInt("hw.clockrate", 0) / 1000.0;
+    int clockRate = ffSysctlGetInt("hw.clockrate", 0);
+    cpu->frequencyBase = clockRate <= 0 ? 0.0/0.0 : clockRate / 1000.0;
     cpu->temperature = FF_CPU_TEMP_UNSET;
 
     if (options->temp)