diff --git a/src/libinput.c b/src/libinput.c
index 951698a0..7456b908 100644
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -510,7 +510,7 @@ libinput_add_fd(struct libinput *libinput,
 	struct libinput_source *source;
 	struct epoll_event ep;
 
-	source = malloc(sizeof *source);
+	source = zalloc(sizeof *source);
 	if (!source)
 		return NULL;