diff --git a/hotkey_linux.c b/hotkey_x11.c
similarity index 98%
rename from hotkey_linux.c
rename to hotkey_x11.c
index 0cb8b1c..5ab3565 100644
--- a/hotkey_linux.c
+++ b/hotkey_x11.c
@@ -4,7 +4,7 @@
 //
 // Written by Changkun Ou <changkun.de>
 
-//go:build linux
+//go:build linux || openbsd
 
 #include <stdint.h>
 #include <stdio.h>
@@ -74,4 +74,4 @@ int waitHotkey(uintptr_t hkhandle, unsigned int mod, int key) {
 			return 0;
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/hotkey_linux.go b/hotkey_x11.go
similarity index 97%
rename from hotkey_linux.go
rename to hotkey_x11.go
index f3be4fa..0a082d6 100644
--- a/hotkey_linux.go
+++ b/hotkey_x11.go
@@ -4,12 +4,14 @@
 //
 // Written by Changkun Ou <changkun.de>
 
-//go:build linux
+//go:build linux || openbsd
 
 package hotkey
 
 /*
 #cgo LDFLAGS: -lX11
+#cgo openbsd LDFLAGS: -L/usr/X11R6/lib -lX11
+#cgo openbsd CFLAGS: -I/usr/X11R6/include
 
 #include <stdint.h>
 
diff --git a/hotkey_linux_test.go b/hotkey_x11_test.go
similarity index 96%
rename from hotkey_linux_test.go
rename to hotkey_x11_test.go
index 5c70d75..da8d3f9 100644
--- a/hotkey_linux_test.go
+++ b/hotkey_x11_test.go
@@ -4,7 +4,7 @@
 //
 // Written by Changkun Ou <changkun.de>
 
-//go:build linux && cgo
+//go:build (linux || openbsd) && cgo
 
 package hotkey_test
 
diff --git a/mainthread/os.go b/mainthread/os.go
index 605bf39..2886470 100644
--- a/mainthread/os.go
+++ b/mainthread/os.go
@@ -4,7 +4,7 @@
 //
 // Written by Changkun Ou <changkun.de>
 
-//go:build windows || linux || (darwin && !cgo)
+//go:build windows || linux || openbsd || (darwin && !cgo)
 
 package mainthread