diff --git a/source/Makefile b/source/Makefile
index 6016a012..f9b4ca85 100644
--- a/source/Makefile
+++ b/source/Makefile
@@ -6,7 +6,7 @@ ALL_MINIWARE_MODELS=TS100 TS80 TS80P TS101
 ALL_PINECIL_MODELS=Pinecil
 ALL_PINECIL_V2_MODELS=Pinecilv2
 ALL_MHP30_MODELS=MHP30
-ALL_SEQURE_MODELS=S60 S60P
+ALL_SEQURE_MODELS=S60 S60P S99
 ALL_MODELS=$(ALL_MINIWARE_MODELS) $(ALL_PINECIL_MODELS) $(ALL_MHP30_MODELS) $(ALL_PINECIL_V2_MODELS) $(ALL_SEQURE_MODELS)
 
 ifneq ($(model),$(filter $(model),$(ALL_MODELS)))
@@ -144,6 +144,9 @@ flash_size=62k
 ifeq ($(model), S60P)
 bootldr_size=0x5000
 DEVICE_DFU_ADDRESS=0x08005000
+else ifeq ($(model), S99)
+bootldr_size=0x4c00
+DEVICE_DFU_ADDRESS=0x08004c00
 else
 bootldr_size=0x4400
 DEVICE_DFU_ADDRESS=0x08004400