diff --git a/pkg/ccn-lite/ccn-lite-riot.h b/pkg/ccn-lite/ccn-lite-riot.h
index 5b1f6865ba..c9c25acfae 100644
--- a/pkg/ccn-lite/ccn-lite-riot.h
+++ b/pkg/ccn-lite/ccn-lite-riot.h
@@ -131,6 +131,11 @@ extern "C" {
  */
 #define CCNL_QUEUE_SIZE     (8)
 
+/**
+ * Maximum string length for prefix representation
+ */
+#define CCNL_PREFIX_BUFSIZE     (50)
+
 /**
  * Struct holding CCN-Lite's central relay information
  */