diff --git a/src/test/assembly/stack-protector/stack-protector-heuristics-effect.rs b/src/test/assembly/stack-protector/stack-protector-heuristics-effect.rs
index 530326ab7438..7c2b60550905 100644
--- a/src/test/assembly/stack-protector/stack-protector-heuristics-effect.rs
+++ b/src/test/assembly/stack-protector/stack-protector-heuristics-effect.rs
@@ -78,7 +78,7 @@ pub fn array_u8_1(f: fn(*const u8)) {
 #[no_mangle]
 pub fn array_u8_small(f: fn(*const u8)) {
     let a = [0u8; 2];
-    let b = [0u8; 8];
+    let b = [0u8; 7];
     f(&a as *const _);
     f(&b as *const _);