diff --git a/CMakeLists.txt b/CMakeLists.txt
index 849c1257..da576f82 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -156,6 +156,8 @@ else()
 
     if (CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
         set(EXTRA_LIBS kvm pthread)
+    elseif (CMAKE_SYSTEM_NAME STREQUAL OpenBSD)
+        set(EXTRA_LIBS kvm pthread)
     else()
         set(EXTRA_LIBS pthread rt dl)
     endif()
diff --git a/src/base/kernel/Platform_unix.cpp b/src/base/kernel/Platform_unix.cpp
index bbba39f9..edac61a0 100644
--- a/src/base/kernel/Platform_unix.cpp
+++ b/src/base/kernel/Platform_unix.cpp
@@ -87,6 +87,9 @@ char *xmrig::Platform::createUserAgent()
 #ifndef XMRIG_FEATURE_HWLOC
 bool xmrig::Platform::setThreadAffinity(uint64_t cpu_id)
 {
+#if defined(__OpenBSD__)
+	return true;
+#else
     cpu_set_t mn;
     CPU_ZERO(&mn);
     CPU_SET(cpu_id, &mn);
@@ -96,6 +99,7 @@ bool xmrig::Platform::setThreadAffinity(uint64_t cpu_id)
 #   else
     return sched_setaffinity(gettid(), sizeof(cpu_set_t), &mn) == 0;
 #   endif
+#endif
 }
 #endif
 
diff --git a/src/crypto/common/VirtualMemory_unix.cpp b/src/crypto/common/VirtualMemory_unix.cpp
index 3d099c76..a96c960b 100644
--- a/src/crypto/common/VirtualMemory_unix.cpp
+++ b/src/crypto/common/VirtualMemory_unix.cpp
@@ -62,6 +62,8 @@ void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
     void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, VM_FLAGS_SUPERPAGE_SIZE_2MB, 0);
 #   elif defined(__FreeBSD__)
     void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0);
+#   elif defined(__OpenBSD__)
+    void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
 #   else
     void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, 0, 0);
 #   endif