diff --git a/src/unix/freebsd.c b/src/unix/freebsd.c
index 55492adc..d87b74b9 100644
--- a/src/unix/freebsd.c
+++ b/src/unix/freebsd.c
@@ -75,8 +75,9 @@ uint64_t uv__hrtime(uv_clocktype_t type) {
 
 
 int uv_exepath(char* buffer, size_t* size) {
+  char abspath[PATH_MAX * 2 + 1];
   int mib[4];
-  size_t cb;
+  size_t abspath_size;
 
   if (buffer == NULL || size == NULL || *size == 0)
     return -EINVAL;
@@ -93,10 +94,19 @@ int uv_exepath(char* buffer, size_t* size) {
   mib[3] = -1;
 #endif
 
-  cb = *size;
-  if (sysctl(mib, 4, buffer, &cb, NULL, 0))
+  abspath_size = sizeof abspath;;
+  if (sysctl(mib, 4, abspath, &abspath_size, NULL, 0))
     return -errno;
-  *size = strlen(buffer);
+
+  assert(abspath_size > 0);
+  abspath_size -= 1;
+  *size -= 1;
+
+  if (*size > abspath_size)
+    *size = abspath_size;
+
+  memcpy(buffer, abspath, *size);
+  buffer[*size] = '\0';
 
   return 0;
 }