diff --git a/docs/intrinsics/stosq.md b/docs/intrinsics/stosq.md
index 37afa238225..bd1487ead2f 100644
--- a/docs/intrinsics/stosq.md
+++ b/docs/intrinsics/stosq.md
@@ -15,7 +15,7 @@ Generates a store string instruction (`rep stosq`).
 ## Syntax
 
 ```C
-void __stosb(
+void __stosq(
    unsigned __int64* Destination,
    unsigned __int64 Data,
    size_t Count