diff --git a/compton.c b/compton.c
index 8dd15a3..653a799 100644
--- a/compton.c
+++ b/compton.c
@@ -666,8 +666,8 @@ make_shadow(Display *dpy, double opacity,
   //int sr = r + 4;
   //int er = r + 8;
   int r = gsize / 2;
-  int sr = r - 2;
-  int er = r + 2;
+  int sr = r - 4;
+  int er = r + 4;
   for (y = sr; y < (sheight - er); y++) {
     for (x = sr; x < (swidth - er); x++) {
       data[y * swidth + x] = 0;