diff --git a/CMakeLists.txt b/CMakeLists.txt
index ba4f822..69590d8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,6 +23,7 @@ include(CMakeModules/git_info.cmake)
 include(CMakeModules/install_dirs.cmake)
 include(CheckCCompilerFlag)
 include(CheckCXXCompilerFlag)
+include_directories(/usr/local/include)
 
 # Include custom FindXXX modules
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMakeModules")
diff --git a/include/libfds/converters.h b/include/libfds/converters.h
index 04c3e14..c508267 100644
--- a/include/libfds/converters.h
+++ b/include/libfds/converters.h
@@ -77,8 +77,8 @@ extern "C" {
 #endif
 
 // Check the size of double and float, this MUST be here!!!
-static_assert(sizeof(double) == sizeof(uint64_t), "Double is not 8 bytes long!");
-static_assert(sizeof(float)  == sizeof(uint32_t), "Float is not 4 bytes long!");
+_Static_assert(sizeof(double) == sizeof(uint64_t), "Double is not 8 bytes long!");
+_Static_assert(sizeof(float)  == sizeof(uint32_t), "Float is not 4 bytes long!");
 
 /**
  * \def FDS_CONVERT_EPOCHS_DIFF
diff --git a/src/converters/converters.c b/src/converters/converters.c
index caf9eb0..bacd67b 100644
--- a/src/converters/converters.c
+++ b/src/converters/converters.c
@@ -44,6 +44,9 @@
 #include <stdio.h>      // snprintf
 #include <inttypes.h>   // PRIi64, PRIu32,...
 #include <math.h>       // isnormal
+#ifdef __OpenBSD__
+#include <sys/socket.h>
+#endif
 #include "branchlut2.h"
 
 int
diff --git a/src/file/File_writer.cpp b/src/file/File_writer.cpp
index a9dd7e4..c7ff784 100644
--- a/src/file/File_writer.cpp
+++ b/src/file/File_writer.cpp
@@ -10,6 +10,7 @@
 
 #include <endian.h>
 #include <algorithm>
+#include <cerrno>
 
 #include <sys/types.h> // lseek
 #include <unistd.h>    // lseek, lockf
diff --git a/src/file/Io_async.hpp b/src/file/Io_async.hpp
index d57d61b..4c5dbce 100644
--- a/src/file/Io_async.hpp
+++ b/src/file/Io_async.hpp
@@ -11,7 +11,11 @@
 #ifndef LIBFDS_IO_ASYNC_HPP
 #define LIBFDS_IO_ASYNC_HPP
 
+#ifdef __OpenBSD__
+#include <aio_compat.h>
+#else
 #include <aio.h>
+#endif
 #include <memory>
 #include "Io_request.hpp"