diff --git a/include/tinyalsa/plugin.h b/include/tinyalsa/plugin.h
index fed50be..91d862a 100644
--- a/include/tinyalsa/plugin.h
+++ b/include/tinyalsa/plugin.h
@@ -32,6 +32,7 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <sys/types.h>
 
 #include <sound/asound.h>