diff --git a/src/arp.c b/src/arp.c
index 21e93c9..df07e91 100644
--- a/src/arp.c
+++ b/src/arp.c
@@ -396,7 +396,7 @@ static int arp_is_query_reply(struct arpMsg am[static 1])
 static int arp_gen_probe_wait(struct client_state_t cs[static 1])
 {
     // This is not a uniform distribution but it doesn't matter here.
-    return arp_probe_min + (nk_random_u32(&cs->rnd32_state) & 0x7fffffffu)
+    return arp_probe_min + (nk_random_u32(&cs->rnd_state) & 0x7fffffffu)
         % (arp_probe_max - arp_probe_min);
 }
 
diff --git a/src/dhcp.c b/src/dhcp.c
index 7f9b3f5..d81aadc 100644
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -495,7 +495,7 @@ ssize_t send_decline(struct client_state_t cs[static 1], uint32_t server)
 
 ssize_t send_release(struct client_state_t cs[static 1])
 {
-    struct dhcpmsg packet = {.xid = nk_random_u32(&cs->rnd32_state)};
+    struct dhcpmsg packet = {.xid = nk_random_u32(&cs->rnd_state)};
     init_packet(&packet, DHCPRELEASE);
     packet.ciaddr = cs->clientAddr;
     add_option_reqip(&packet, cs->clientAddr);
diff --git a/src/duiaid.c b/src/duiaid.c
index 4e97ec5..b84f61a 100644
--- a/src/duiaid.c
+++ b/src/duiaid.c
@@ -121,7 +121,7 @@ static int open_iaidfile_write(const uint8_t hwaddr[static 6],
 // RFC6355 specifies a RFC4122 UUID, but I simply use a 128-byte random
 // value, as the complexity of RFC4122 UUID generation is completely
 // unwarranted for DHCPv4.
-static size_t generate_duid(struct nk_random_state_u32 s[static 1],
+static size_t generate_duid(struct nk_random_state s[static 1],
                             char dest[static 1], size_t dlen)
 {
     const size_t tlen = sizeof(uint16_t) + 4 * sizeof(uint32_t);
@@ -143,7 +143,7 @@ static size_t generate_duid(struct nk_random_state_u32 s[static 1],
 
 // RFC6355 specifies the IAID as a 32-bit value that uniquely identifies
 // a hardware link for a given host.
-static size_t generate_iaid(struct nk_random_state_u32 s[static 1],
+static size_t generate_iaid(struct nk_random_state s[static 1],
                             char dest[static 1], size_t dlen)
 {
     if (dlen < sizeof(uint32_t))
@@ -169,7 +169,7 @@ void get_clientid(struct client_state_t cs[static 1],
 
     int fd = open_iaidfile_read(cc->arp, sizeof cc->arp);
     if (fd < 0) {
-        iaid_len = generate_iaid(&cs->rnd32_state, iaid, sizeof iaid);
+        iaid_len = generate_iaid(&cs->rnd_state, iaid, sizeof iaid);
         fd = open_iaidfile_write(cc->arp, sizeof cc->arp);
         ssize_t r = safe_write(fd, iaid, iaid_len);
         if (r < 0 || (size_t)r != iaid_len)
@@ -186,7 +186,7 @@ void get_clientid(struct client_state_t cs[static 1],
 
     fd = open_duidfile_read();
     if (fd < 0) {
-        duid_len = generate_duid(&cs->rnd32_state, duid, sizeof duid);
+        duid_len = generate_duid(&cs->rnd_state, duid, sizeof duid);
         fd = open_duidfile_write();
         ssize_t r = safe_write(fd, duid, duid_len);
         if (r < 0 || (size_t)r != duid_len)
diff --git a/src/ndhc.c b/src/ndhc.c
index 6f7a7a4..6ab6735 100644
--- a/src/ndhc.c
+++ b/src/ndhc.c
@@ -357,7 +357,7 @@ static void do_ndhc_work(void)
             // We can't do anything while the iface is disabled, anyway.
             // Suspend might cause link state change notifications to be
             // missed, so we use a non-infinite timeout.
-            timeout = 2000 + nk_random_u32(&cs.rnd32_state) % 3000;
+            timeout = 2000 + nk_random_u32(&cs.rnd_state) % 3000;
             continue;
         }
 
@@ -370,7 +370,7 @@ static void do_ndhc_work(void)
                                   arp_wake_ts <= nowts, sev_signal);
 
         if (dhcp_ok == COR_ERROR) {
-            timeout = 2000 + nk_random_u32(&cs.rnd32_state) % 3000;
+            timeout = 2000 + nk_random_u32(&cs.rnd_state) % 3000;
             continue;
         }
 
@@ -435,7 +435,7 @@ static void spawn_ifch(void)
         close(ifchSock[0]);
         close(ifchStream[0]);
         // Don't share the RNG state with the master process.
-        nk_random_u32_init(&cs.rnd32_state);
+        nk_random_init(&cs.rnd_state);
         ifch_main();
     } else if (ifch_pid > 0) {
         close(ifchSock[1]);
@@ -452,7 +452,7 @@ static void spawn_sockd(void)
         close(sockdSock[0]);
         close(sockdStream[0]);
         // Don't share the RNG state with the master process.
-        nk_random_u32_init(&cs.rnd32_state);
+        nk_random_init(&cs.rnd_state);
         sockd_main();
     } else if (sockd_pid > 0) {
         close(sockdSock[1]);
@@ -550,7 +550,7 @@ int main(int argc, char *argv[])
 {
     parse_cmdline(argc, argv);
 
-    nk_random_u32_init(&cs.rnd32_state);
+    nk_random_init(&cs.rnd_state);
 
     if (getuid())
         suicide("I need to be started as root.");
diff --git a/src/ndhc.h b/src/ndhc.h
index caf025a..a23a8f3 100644
--- a/src/ndhc.h
+++ b/src/ndhc.h
@@ -35,7 +35,7 @@
 #include "nk/random.h"
 
 struct client_state_t {
-    struct nk_random_state_u32 rnd32_state;
+    struct nk_random_state rnd_state;
     long long leaseStartTime, renewTime, rebindTime;
     long long dhcp_wake_ts;
     int ifDeconfig; // Set if the interface has already been deconfigured.
diff --git a/src/state.c b/src/state.c
index 3ee7963..974b2b4 100644
--- a/src/state.c
+++ b/src/state.c
@@ -70,7 +70,7 @@ static int delay_timeout(struct client_state_t cs[static 1], size_t numpackets)
     if (numpackets < sizeof tot)
         to = tot[numpackets];
     // Distribution is a bit biased but it doesn't really matter.
-    return to * 1000 + (nk_random_u32(&cs->rnd32_state) & 0x7fffffffu) % 1000;
+    return to * 1000 + (nk_random_u32(&cs->rnd_state) & 0x7fffffffu) % 1000;
 }
 
 static void reinit_shared_deconfig(struct client_state_t cs[static 1])
@@ -149,7 +149,7 @@ static int rebinding_timeout(struct client_state_t cs[static 1],
                     client_config.interface);
         return BTO_HARDFAIL;
     }
-    long long ts0 = nowts + (50 + nk_random_u32(&cs->rnd32_state) % 20) * 1000;
+    long long ts0 = nowts + (50 + nk_random_u32(&cs->rnd_state) % 20) * 1000;
     cs->dhcp_wake_ts = ts0 < elt ? ts0 : elt;
     return BTO_WAIT;
 }
@@ -172,7 +172,7 @@ static int renewing_timeout(struct client_state_t cs[static 1],
                     client_config.interface);
         return BTO_HARDFAIL;
     }
-    long long ts0 = nowts + (50 + nk_random_u32(&cs->rnd32_state) % 20) * 1000;
+    long long ts0 = nowts + (50 + nk_random_u32(&cs->rnd_state) % 20) * 1000;
     cs->dhcp_wake_ts = ts0 < rbt ? ts0 : rbt;
     return BTO_WAIT;
 }
@@ -354,7 +354,7 @@ static int selecting_timeout(struct client_state_t cs[static 1],
             suicide("%s: No lease; failing.", client_config.interface);
     }
     if (cs->num_dhcp_requests == 0)
-        cs->xid = nk_random_u32(&cs->rnd32_state);
+        cs->xid = nk_random_u32(&cs->rnd_state);
     if (send_discover(cs) < 0) {
         log_warning("%s: Failed to send a discover request packet.",
                     client_config.interface);
@@ -447,7 +447,7 @@ int dhcp_handle(struct client_state_t cs[static 1], long long nowts,
 {
     scrBegin;
 reinit:
-    cs->xid = nk_random_u32(&cs->rnd32_state);
+    cs->xid = nk_random_u32(&cs->rnd_state);
     // We're in the SELECTING state here.
     for (;;) {
         int ret = COR_SUCCESS;