diff --git a/xml/System/Math.xml b/xml/System/Math.xml
index 281ffbd99c2..d6c4aa65984 100644
--- a/xml/System/Math.xml
+++ b/xml/System/Math.xml
@@ -5345,8 +5345,8 @@ The following example demonstrates how to use the
- A single-precision floating-point number that specifies the base value.
- A single-precision floating-point number that specifies the power.
+ A double-precision floating-point number that specifies the base value.
+ A 32-bit integer that specifies the power.
Returns x * 2^n computed efficiently.
x * 2^n computed efficiently.