diff --git a/dln.c b/dln.c
index ac09430492..7d0447db6c 100644
--- a/dln.c
+++ b/dln.c
@@ -23,6 +23,7 @@ static void dln_loaderror(const char *format, ...);
 #endif
 #include "dln.h"
 #include "internal.h"
+#include "internal/compilers.h"
 
 #ifdef HAVE_STDLIB_H
 # include <stdlib.h>