diff --git a/src/zmalloc.c b/src/zmalloc.c
index 5e6010278..fd8bb6938 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -294,6 +294,26 @@ size_t zmalloc_get_rss(void) {
 
     return t_info.resident_size;
 }
+#elif defined(__FreeBSD__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+#include <unistd.h>
+
+size_t zmalloc_get_rss(void) {
+    struct kinfo_proc info;
+    size_t infolen = sizeof(info);
+    int mib[4];
+    mib[0] = CTL_KERN;
+    mib[1] = KERN_PROC;
+    mib[2] = KERN_PROC_PID;
+    mib[3] = getpid();
+
+    if (sysctl(mib, 4, &info, &infolen, NULL, 0) == 0)
+        return (size_t)info.ki_rssize;
+
+    return 0L;
+}
 #else
 size_t zmalloc_get_rss(void) {
     /* If we can't get the RSS in an OS-specific way for this system just