diff --git a/src/plugins/weechat-plugin.h b/src/plugins/weechat-plugin.h
index 101c3df3f..167c7aa0e 100644
--- a/src/plugins/weechat-plugin.h
+++ b/src/plugins/weechat-plugin.h
@@ -22,6 +22,8 @@
 #ifndef __WEECHAT_WEECHAT_PLUGIN_H
 #define __WEECHAT_WEECHAT_PLUGIN_H 1
 
+#include <sys/types.h>
+
 /* return codes for init function and handlers */
 #define PLUGIN_RC_KO                 -1 /* function/handler failed             */
 #define PLUGIN_RC_OK                 0  /* function/handler ok                 */
diff --git a/weechat/src/plugins/weechat-plugin.h b/weechat/src/plugins/weechat-plugin.h
index 101c3df3f..167c7aa0e 100644
--- a/weechat/src/plugins/weechat-plugin.h
+++ b/weechat/src/plugins/weechat-plugin.h
@@ -22,6 +22,8 @@
 #ifndef __WEECHAT_WEECHAT_PLUGIN_H
 #define __WEECHAT_WEECHAT_PLUGIN_H 1
 
+#include <sys/types.h>
+
 /* return codes for init function and handlers */
 #define PLUGIN_RC_KO                 -1 /* function/handler failed             */
 #define PLUGIN_RC_OK                 0  /* function/handler ok                 */