diff --git a/src/plugins/platforms/drm/drm_object_connector.cpp b/src/plugins/platforms/drm/drm_object_connector.cpp
index 958fd2bda2..c617d5b468 100644
--- a/src/plugins/platforms/drm/drm_object_connector.cpp
+++ b/src/plugins/platforms/drm/drm_object_connector.cpp
@@ -15,6 +15,8 @@
 // frameworks
 #include <KConfigGroup>
 
+#include <cerrno>
+
 namespace KWin
 {