diff --git a/dwm.c b/dwm.c
index a0ec836..cfd5a85 100644
--- a/dwm.c
+++ b/dwm.c
@@ -1672,6 +1672,7 @@ void
 resizemouse(const Arg *arg)
 {
 	int ocx, ocy, nw, nh;
+	unsigned int i;
 	Client *c;
 	Monitor *m;
 	XEvent ev;
@@ -1717,6 +1718,11 @@ resizemouse(const Arg *arg)
 				resize(c, c->x, c->y, nw, nh, 1);
 			else {
 				selmon->mfact = (double) (ev.xmotion.x_root - selmon->mx) / (double) selmon->ww;
+				for(i=0; i<LENGTH(tags); ++i)
+					if(selmon->tagset[selmon->seltags] & 1<<i)
+						selmon->pertag->mfacts[i+1] = selmon->mfact;
+				if(selmon->pertag->curtag == 0)
+					selmon->pertag->mfacts[0] = selmon->mfact;
 				arrange(selmon);
 			}
 			break;