diff --git a/sowm.c b/sowm.c
index 0f7d165..5371060 100644
--- a/sowm.c
+++ b/sowm.c
@@ -114,7 +114,7 @@ void win_add(Window w) {
     c->win  = w;
     cur     = c;
 
-	XSelectInput(dis, w, PropertyChangeMask|StructureNotifyMask|
+    XSelectInput(dis, w, PropertyChangeMask|StructureNotifyMask|
                          EnterWindowMask|FocusChangeMask);
 }