diff --git a/package/tllist/tllist.mk b/package/tllist/tllist.mk
index 88a28d2427..69a34a65ab 100644
--- a/package/tllist/tllist.mk
+++ b/package/tllist/tllist.mk
@@ -12,5 +12,6 @@ TLLIST_LICENSE_FILES = LICENSE
 # header only
 TLLIST_INSTALL_TARGET = NO
 TLLIST_INSTALL_STAGING = YES
+TLLIST_CFLAGS = $(TARGET_CFLAGS) -std=c99
 
 $(eval $(meson-package))