diff --git a/reference/gmp/functions/gmp-fact.xml b/reference/gmp/functions/gmp-fact.xml
index 0e13336165..dc58908b1d 100644
--- a/reference/gmp/functions/gmp-fact.xml
+++ b/reference/gmp/functions/gmp-fact.xml
@@ -13,7 +13,7 @@
GMPintstringnum
- Calculates factorial (a!) of num.
+ Calculates factorial (num!) of num.