diff --git a/std/math/scalbn.zig b/std/math/scalbn.zig
index 43fac7c00c29a1e0e15f136f0794b4cecde4998f..fcd1a5e68c10485c672f490269088e7621d1028b 100644
--- a/std/math/scalbn.zig
+++ b/std/math/scalbn.zig
@@ -48,10 +48,10 @@ fn scalbn64(x: f64, n_: i32) -> f64 {
     var n = n_;
 
     if (n > 1023) {
-        y *= 0x1.0p1022 * 10.0;
+        y *= 0x1.0p1022 * 2.0;
         n -= 1023;
         if (n > 1023) {
-            y *= 0x1.0p1022 * 10.0;
+            y *= 0x1.0p1022 * 2.0;
             n -= 1023;
             if (n > 1023) {
                 n = 1023;