diff --git a/src/freebsd.cc b/src/freebsd.cc
index c2d8e540..77d9b44a 100644
--- a/src/freebsd.cc
+++ b/src/freebsd.cc
@@ -551,10 +551,9 @@ char get_freq(char *p_client_buffer, size_t client_buffer_size,
     return 0;
   }
 
-  freq_sysctl = (char *)calloc(16, sizeof(char));
-  if (freq_sysctl == nullptr) { exit(-1); }
+  char freq_sysctl[16] = {0};
 
-  snprintf(freq_sysctl, 16, "dev.cpu.%d.freq", (cpu - 1));
+  snprintf(freq_sysctl, sizeof(freq_sysctl), "dev.cpu.%d.freq", (cpu - 1));
 
   if (GETSYSCTL(freq_sysctl, freq) == 0) {
     snprintf(p_client_buffer, client_buffer_size, p_format,
@@ -563,7 +562,6 @@ char get_freq(char *p_client_buffer, size_t client_buffer_size,
     snprintf(p_client_buffer, client_buffer_size, p_format, 0.0f);
   }
 
-  free(freq_sysctl);
   return 1;
 }