diff --git a/src/seeder/main.cpp b/src/seeder/main.cpp
--- a/src/seeder/main.cpp
+++ b/src/seeder/main.cpp
@@ -43,7 +43,7 @@
         if (ips.empty()) {
             wait *= 1000;
             wait += rand() % (500 * *nThreads);
-            Sleep(wait);
+            UninterruptibleSleep(std::chrono::milliseconds(wait));
             continue;
         }
 
@@ -242,7 +242,7 @@
     int count = 0;
     do {
         // First 100s, than 200s, 400s, 800s, 1600s, and then 3200s forever
-        Sleep(100000 << count);
+        UninterruptibleSleep(std::chrono::seconds(100 << count));
         if (count < 5) {
             count++;
         }
@@ -319,7 +319,7 @@
             stats.nNew, stats.nAvail - stats.nTracked - stats.nNew,
             stats.nBanned, (unsigned long long)requests,
             (unsigned long long)queries);
-        Sleep(1000);
+        UninterruptibleSleep(1s);
     } while (1);
     return nullptr;
 }
@@ -336,7 +336,7 @@
                        true);
             }
         }
-        Sleep(1800000);
+        UninterruptibleSleep(30min);
     } while (1);
     return nullptr;
 }
@@ -427,7 +427,7 @@
             dnsThread.push_back(new CDnsThread(&opts, i));
             pthread_create(&threadDns, nullptr, ThreadDNS, dnsThread[i]);
             tfm::format(std::cout, ".");
-            Sleep(20);
+            UninterruptibleSleep(20ms);
         }
         tfm::format(std::cout, "done\n");
     }
diff --git a/src/seeder/util.h b/src/seeder/util.h
--- a/src/seeder/util.h
+++ b/src/seeder/util.h
@@ -5,16 +5,7 @@
 #ifndef BITCOIN_SEEDER_UTIL_H
 #define BITCOIN_SEEDER_UTIL_H
 
-#include <ctime>
-
 #define BEGIN(a) ((char *)&(a))
 #define END(a) ((char *)&((&(a))[1]))
 
-static inline void Sleep(int nMilliSec) {
-    struct timespec wa;
-    wa.tv_sec = nMilliSec / 1000;
-    wa.tv_nsec = (nMilliSec % 1000) * 1000000;
-    nanosleep(&wa, nullptr);
-}
-
 #endif // BITCOIN_SEEDER_UTIL_H