diff --git a/include/haproxy/defaults.h b/include/haproxy/defaults.h
index ae4def1..6a8b03d 100644
--- a/include/haproxy/defaults.h
+++ b/include/haproxy/defaults.h
@@ -388,4 +388,11 @@
 #define MAX_POLLERS	10
 #endif
 
+/* Make all xxhash functions inline, with implementations being directly
+ * included within xxhash.h.
+ */
+#ifndef XXH_INLINE_ALL
+#define XXH_INLINE_ALL
+#endif
+
 #endif /* _HAPROXY_DEFAULTS_H */
diff --git a/include/import/xxhash.h b/include/import/xxhash.h
index 2d56d23..074ad03 100644
--- a/include/import/xxhash.h
+++ b/include/import/xxhash.h
@@ -75,6 +75,8 @@
 extern "C" {
 #endif
 
+#include <haproxy/defaults.h>
+
 /* ****************************
  *  INLINE mode
  ******************************/