diff --git a/src/wget.h b/src/wget.h
index d8ab0c90..a0122db9 100644
--- a/src/wget.h
+++ b/src/wget.h
@@ -208,7 +208,12 @@ typedef double SUM_SIZE_INT;
 #include "options.h"
 
 /* Everything uses this, so include them here directly.  */
-#include "xmalloc.h"
+#ifdef USE_GNULIB_ALLOC
+# include <alloca.h>
+# include "xalloc.h"
+#else
+# include "xmalloc.h"
+#endif
 
 /* Likewise for logging functions.  */
 #include "log.h"