diff --git a/xwayland/selection.c b/xwayland/selection.c
index 25ec848..3fcd578 100644
--- a/xwayland/selection.c
+++ b/xwayland/selection.c
@@ -197,7 +197,7 @@
 		return;
 	}
 
-	source = malloc(sizeof *source);
+	source = zalloc(sizeof *source);
 	if (source == NULL) {
 		free(reply);
 		return;