diff --git a/src/hb-ot-cff1-table.cc b/src/hb-ot-cff1-table.cc
index f62b80e3c..3b5e5947b 100644
--- a/src/hb-ot-cff1-table.cc
+++ b/src/hb-ot-cff1-table.cc
@@ -165,8 +165,8 @@ struct bounds_t
 {
   void init ()
   {
-    min.set_int ((1<<31)-1, (1<<31)-1);
-    max.set_int (-(1<<31), -(1<<31));
+    min.set_int (2147483647, 2147483647);
+    max.set_int (-2147483648, -2147483648);
   }
 
   void update (const point_t &pt)
diff --git a/src/hb-ot-cff2-table.cc b/src/hb-ot-cff2-table.cc
index 11619d779..0f8a16df8 100644
--- a/src/hb-ot-cff2-table.cc
+++ b/src/hb-ot-cff2-table.cc
@@ -34,10 +34,10 @@ struct extents_param_t
   void init ()
   {
     path_open = false;
-    min_x.set_int ((1<<31)-1);
-    min_y.set_int ((1<<31)-1);
-    max_x.set_int (-(1<<31));
-    max_y.set_int (-(1<<31));
+    min_x.set_int (2147483647);
+    min_y.set_int (2147483647);
+    max_x.set_int (-2147483648);
+    max_y.set_int (-2147483648);
   }
 
   void start_path ()         { path_open = true; }