diff --git a/sw/airborne/boards/tiny_1.1.h b/sw/airborne/boards/tiny_1.1.h
index 9f0d40070e..bec08225e0 100644
--- a/sw/airborne/boards/tiny_1.1.h
+++ b/sw/airborne/boards/tiny_1.1.h
@@ -10,9 +10,16 @@
 /* CPU clock freq.               */
 #define CCLK (FOSC * PLL_MUL)
 
+#ifdef USE_USB_HIGH_PCLK
+/* Peripheral bus speed mask  0x00-> 4, 0x01-> 1, 0x02-> 2   */
+/* change both PBSD_BITS/VAL     15MHz,    60MHz,    30MHz   */
+#define PBSD_BITS 0x02
+#define PBSD_VAL 2
+#else
 /* Peripheral bus speed mask 0x00->4, 0x01-> 1, 0x02 -> 2   */
 #define PBSD_BITS 0x00
 #define PBSD_VAL 4
+#endif
 
 /* Peripheral bus clock freq. */
 #define PCLK (CCLK / PBSD_VAL)