diff --git a/INSTALL.md b/INSTALL.md
index 6dd5d2b..a4ca35d 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -104,8 +104,8 @@ Installation
     * No longer requires: libseccomp
   - `--disable-sandbox-landlock` (Linux-only)
     * Disable the [Landlock] feature in the sandbox implementation
-  - `--enable-xxhash-inline`
-    * Use xxHash as a header-only library
+  - `--disable-xxhash-inline`
+    * Do not use xxHash as a header-only library
   - `--disable-backend-firefox-write`
     * Build the Firefox backend without write features
     * No longer requires: Nettle, uriparser
diff --git a/configure.ac b/configure.ac
index 6753342..d29d06e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,7 +61,7 @@ AS_VAR_IF([host_os_is_linux], [yes], [
     EX_FEAT([sandbox-landlock], [yes], [Landlock features for sandboxing])
 ])
 
-EX_FEAT([xxhash-inline], [no], [using xxhash as a header-only library])
+EX_FEAT([xxhash-inline], [yes], [using xxhash as a header-only library])
 
 EX_FEAT([bookmarkfs-debug], [no], [debugging features for BookmarkFS])