diff --git a/openair2/LAYER2/RLC/rlc.h b/openair2/LAYER2/RLC/rlc.h
index 493e054065..b0583d118f 100755
--- a/openair2/LAYER2/RLC/rlc.h
+++ b/openair2/LAYER2/RLC/rlc.h
@@ -64,6 +64,10 @@
 #include "PMCH-InfoList-r9.h"
 #endif
 
+#ifdef CMAKER
+typedef uint64_t hash_key_t;
+#define HASHTABLE_QUESTIONABLE_KEY_VALUE ((uint64_t)-1)
+#endif
 //-----------------------------------------------------------------------------
 #    ifdef RLC_MAC_C
 #        define private_rlc_mac(x) x