diff --git a/changes/bug23291 b/changes/bug23291
new file mode 100644
index 000000000..a5b0efda0
--- /dev/null
+++ b/changes/bug23291
@@ -0,0 +1,3 @@
+  o Minor bugfixes (testing):
+    - Fix an undersized buffer in test-memwipe.c. Fixes bug 23291; bugfix on
+      0.2.7.2-alpha. Found and patched by Ties Stuij.
diff --git a/src/test/test-memwipe.c b/src/test/test-memwipe.c
index 21882448c..fd6457416 100644
--- a/src/test/test-memwipe.c
+++ b/src/test/test-memwipe.c
@@ -82,7 +82,7 @@ static unsigned
 check_a_buffer(void)
 {
   unsigned int i;
-  volatile char buf[1024];
+  volatile char buf[BUF_LEN];
   unsigned sum = 0;
 
   /* See if this buffer has the string in it.