diff --git a/src/spawn-posix.c b/src/spawn-posix.c
index ac19761..dd30dce 100644
--- a/src/spawn-posix.c
+++ b/src/spawn-posix.c
@@ -55,6 +55,7 @@
 # include <dirent.h>
 #endif /*__linux__ */
 
+#define _GPGRT_NEED_AFLOCAL 1
 #include "gpgrt-int.h"