diff --git a/darwin/DarwinProcessList.c b/darwin/DarwinProcessList.c
index d45ac09c..f4933aee 100644
--- a/darwin/DarwinProcessList.c
+++ b/darwin/DarwinProcessList.c
@@ -40,14 +40,14 @@ void ProcessList_getHostInfo(host_basic_info_data_t *p) {
    mach_msg_type_number_t info_size = HOST_BASIC_INFO_COUNT;
 
    if(0 != host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)p, &info_size)) {
-       err(2, "Unable to retrieve host info\n");
+       CRT_fatalError("Unable to retrieve host info\n");
    }
 }
 
 void ProcessList_freeCPULoadInfo(processor_cpu_load_info_t *p) {
    if(NULL != p && NULL != *p) {
        if(0 != munmap(*p, vm_page_size)) {
-           err(8, "Unable to free old CPU load information\n");
+           CRT_fatalError("Unable to free old CPU load information\n");
        }
    }
 
@@ -60,7 +60,7 @@ unsigned ProcessList_allocateCPULoadInfo(processor_cpu_load_info_t *p) {
 
    // TODO Improving the accuracy of the load counts woule help a lot.
    if(0 != host_processor_info(mach_host_self(), PROCESSOR_CPU_LOAD_INFO, &cpu_count, (processor_info_array_t *)p, &info_size)) {
-       err(4, "Unable to retrieve CPU info\n");
+       CRT_fatalError("Unable to retrieve CPU info\n");
    }
 
    return cpu_count;
@@ -70,7 +70,7 @@ void ProcessList_getVMStats(vm_statistics64_t p) {
     mach_msg_type_number_t info_size = HOST_VM_INFO64_COUNT;
 
     if (host_statistics64(mach_host_self(), HOST_VM_INFO64, (host_info_t)p, &info_size) != 0)
-       err(9, "Unable to retrieve VM statistics\n");
+       CRT_fatalError("Unable to retrieve VM statistics\n");
 }
 
 struct kinfo_proc *ProcessList_getKInfoProcs(size_t *count) {
@@ -83,14 +83,14 @@ struct kinfo_proc *ProcessList_getKInfoProcs(size_t *count) {
     */
    *count = 0;
    if (sysctl(mib, 4, NULL, count, NULL, 0) < 0)
-      err(5, "Unable to get size of kproc_infos");
+      CRT_fatalError("Unable to get size of kproc_infos");
 
    processes = malloc(*count);
    if (processes == NULL)
-      errx(6, "Out of memory for kproc_infos");
+      CRT_fatalError("Out of memory for kproc_infos");
 
    if (sysctl(mib, 4, processes, count, NULL, 0) < 0)
-      err(7, "Unable to get kinfo_procs");
+      CRT_fatalError("Unable to get kinfo_procs");
 
    *count = *count / sizeof(struct kinfo_proc);
 
diff --git a/openbsd/OpenBSDProcessList.c b/openbsd/OpenBSDProcessList.c
index 0dad4534..210328aa 100644
--- a/openbsd/OpenBSDProcessList.c
+++ b/openbsd/OpenBSDProcessList.c
@@ -13,7 +13,6 @@ in the source distribution for its full text.
 #include <unistd.h>
 #include <stdlib.h>
 #include <errno.h>
-#include <err.h>
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/proc.h>
@@ -60,7 +59,7 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, ui
 
    size = sizeof(fscale);
    if (sysctl(fmib, 2, &fscale, &size, NULL, 0) < 0)
-     err(1, "fscale sysctl call failed");
+     CRT_fatalError("fscale sysctl call failed");
 
    for (i = 0; i < pl->cpuCount; i++) {
       fpl->cpus[i].totalTime = 1;
@@ -90,7 +89,7 @@ static inline void OpenBSDProcessList_scanMemoryInfo(ProcessList* pl) {
    size_t size = sizeof(uvmexp);
 
    if (sysctl(uvmexp_mib, 2, &uvmexp, &size, NULL, 0) < 0) {
-      err(1, "uvmexp sysctl call failed");
+      CRT_fatalError("uvmexp sysctl call failed");
    }
 
    //kb_pagesize = uvmexp.pagesize / 1024;
@@ -133,11 +132,11 @@ char *OpenBSDProcessList_readProcessName(kvm_t* kd, struct kinfo_proc* kproc, in
    argv = kvm_getargv(kd, kproc, 500);
 
    if (argv == NULL)
-      err(1, "kvm call failed");
+      CRT_fatalError("kvm call failed");
 
    str = buf = malloc(len+1);
    if (str == NULL)
-      err(1, "out of memory");
+      CRT_fatalError("out of memory");
 
    while (*argv != NULL) {
       cpsz = MIN(len, strlen(*argv));