diff --git a/platform/msb430/dev/cc1020-internal.h b/platform/msb430/dev/cc1020-internal.h
index 13d33c223..e0d06ad5e 100644
--- a/platform/msb430/dev/cc1020-internal.h
+++ b/platform/msb430/dev/cc1020-internal.h
@@ -86,7 +86,7 @@
 #define RX_CURRENT 		0x86
 
 // CC1020 driver configuration
-#define CC1020_BUFFERSIZE	250
+#define CC1020_BUFFERSIZE	128
 
 // PDI (Data in) is on P21
 #define PDO		(P2IN & 0x01)
diff --git a/platform/msb430/dev/cc1020.c b/platform/msb430/dev/cc1020.c
index 43ed32d3e..47ee0814c 100644
--- a/platform/msb430/dev/cc1020.c
+++ b/platform/msb430/dev/cc1020.c
@@ -76,8 +76,8 @@ static void cc1020_reset(void);
 // current mode of cc1020 chip
 static enum cc1020_state cc1020_state = CC1020_OFF;
 static volatile uint8_t cc1020_rxbuf[HDRSIZE + CC1020_BUFFERSIZE];
-static uint8_t cc1020_txbuf[PREAMBLESIZE + HDRSIZE + CC1020_BUFFERSIZE +
-			   TAILSIZE];
+static uint8_t cc1020_txbuf[PREAMBLESIZE + SYNCWDSIZE + HDRSIZE +
+			   CC1020_BUFFERSIZE + TAILSIZE];
 //static volatile enum cc1020_rxstate cc1020_rxstate = CC1020_RX_SEARCHING;
 
 // number of bytes in receive and transmit buffers respectively.