diff --git a/g13/Makefile.am b/g13/Makefile.am
index c0e7a7115..cc0e6a809 100644
--- a/g13/Makefile.am
+++ b/g13/Makefile.am
@@ -70,7 +70,7 @@ g13_syshelp_LDADD = $(libcommon) \
 
 module_tests = t-g13tuple
 t_common_ldadd = $(libcommon) $(LIBGCRYPT_LIBS) \
-	         $(LIBASSUAN_LIBS)
+	         $(LIBASSUAN_LIBS) $(LIBICONV)
 
 t_g13tuple_SOURCES = t-g13tuple.c g13tuple.c
 t_g13tuple_LDADD = $(t_common_ldadd)