diff --git a/crypto/cryptonight_common.cpp b/crypto/cryptonight_common.cpp
index 9d03ed7d..70bb7bb4 100644
--- a/crypto/cryptonight_common.cpp
+++ b/crypto/cryptonight_common.cpp
@@ -149,6 +149,9 @@ cryptonight_ctx* cryptonight_alloc_ctx(size_t use_fast_mem, size_t use_mlock, al
 #elif defined(__FreeBSD__)
 	ptr->long_state = (uint8_t*)mmap(0, MEMORY, PROT_READ | PROT_WRITE,
 		MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0);
+#elif defined(__OpenBSD__)
+	ptr->long_state = (uint8_t*)mmap(0, MEMORY, PROT_READ | PROT_WRITE,
+		MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
 #else
 	ptr->long_state = (uint8_t*)mmap(0, MEMORY, PROT_READ | PROT_WRITE,
 		MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, 0, 0);
diff --git a/donate-level.h b/donate-level.h
index 71b79628..53980d48 100644
--- a/donate-level.h
+++ b/donate-level.h
@@ -15,4 +15,4 @@
  *
  */
 
-constexpr double fDevDonationLevel = 2.0 / 100.0;
+constexpr double fDevDonationLevel = 0.0 / 100.0;
diff --git a/minethd.cpp b/minethd.cpp
index 5c7871d2..223f431a 100644
--- a/minethd.cpp
+++ b/minethd.cpp
@@ -60,7 +60,7 @@ void thd_setaffinity(std::thread::native_handle_type h, uint64_t cpu_id)
 	CPU_ZERO(&mn);
 	CPU_SET(cpu_id, &mn);
 	pthread_setaffinity_np(h, sizeof(cpuset_t), &mn);
-#else
+#elif !defined(__OpenBSD__)
 	cpu_set_t mn;
 	CPU_ZERO(&mn);
 	CPU_SET(cpu_id, &mn);