diff --git a/firmware/atmel_softpack_libraries/libchip_sam3s/source/efc.c b/firmware/atmel_softpack_libraries/libchip_sam3s/source/efc.c
index 0c288e0d..f8925b4b 100644
--- a/firmware/atmel_softpack_libraries/libchip_sam3s/source/efc.c
+++ b/firmware/atmel_softpack_libraries/libchip_sam3s/source/efc.c
@@ -163,7 +163,7 @@ extern void EFC_TranslateAddress( Efc** ppEfc, uint32_t dwAddress, uint16_t* pwP
     wPage = (dwAddress - IFLASH_ADDR) / IFLASH_PAGE_SIZE;
     wOffset = (dwAddress - IFLASH_ADDR) % IFLASH_PAGE_SIZE;
 
-    TRACE_DEBUG( "Translated 0x%08X to page=%d and offset=%d\n\r", dwAddress, wPage, wOffset ) ;
+    TRACE_DEBUG( "Translated 0x%08lX to page=%d and offset=%d\n\r", dwAddress, wPage, wOffset ) ;
     /* Store values */
     if ( pEfc )
     {
diff --git a/firmware/atmel_softpack_libraries/libchip_sam3s/source/flashd.c b/firmware/atmel_softpack_libraries/libchip_sam3s/source/flashd.c
index 677ea309..c661b3f5 100644
--- a/firmware/atmel_softpack_libraries/libchip_sam3s/source/flashd.c
+++ b/firmware/atmel_softpack_libraries/libchip_sam3s/source/flashd.c
@@ -134,7 +134,7 @@ static void ComputeLockRange( uint32_t dwStart, uint32_t dwEnd, uint32_t *pdwAct
     // Store actual page numbers
     EFC_ComputeAddress( pStartEfc, wActualStartPage, 0, pdwActualStart ) ;
     EFC_ComputeAddress( pEndEfc, wActualEndPage, 0, pdwActualEnd ) ;
-    TRACE_DEBUG( "Actual lock range is 0x%06X - 0x%06X\n\r", *pdwActualStart, *pdwActualEnd ) ;
+    TRACE_DEBUG( "Actual lock range is 0x%06lX - 0x%06lX\n\r", *pdwActualStart, *pdwActualEnd ) ;
 }
 
 
diff --git a/firmware/atmel_softpack_libraries/usb/device/dfu/dfu_runtime.c b/firmware/atmel_softpack_libraries/usb/device/dfu/dfu_runtime.c
index 4f772be6..4467cc9f 100644
--- a/firmware/atmel_softpack_libraries/usb/device/dfu/dfu_runtime.c
+++ b/firmware/atmel_softpack_libraries/usb/device/dfu/dfu_runtime.c
@@ -68,7 +68,7 @@ static void __dfufunc handle_getstate(void)
 {
 	uint8_t u8 = g_dfu->state;
 
-	TRACE_DEBUG("handle_getstate(%u)\n\r", g_dfu->state);
+	TRACE_DEBUG("handle_getstate(%lu)\n\r", g_dfu->state);
 
 	USBD_Write(0, (char *)&u8, sizeof(u8), NULL, 0);
 }
diff --git a/firmware/libcommon/source/host_communication.c b/firmware/libcommon/source/host_communication.c
index ea573bb1..c305b80a 100644
--- a/firmware/libcommon/source/host_communication.c
+++ b/firmware/libcommon/source/host_communication.c
@@ -40,7 +40,7 @@ static void usb_write_cb(uint8_t *arg, uint8_t status, uint32_t transferred,
 	local_irq_save(x);
 	bep->in_progress--;
 	local_irq_restore(x);
-	TRACE_DEBUG("%u: in_progress=%d\n", bep->ep, bep->in_progress);
+	TRACE_DEBUG("%u: in_progress=%lu\n", bep->ep, bep->in_progress);
 
 	if (status != USBD_STATUS_SUCCESS)
 		TRACE_ERROR("%s error, status=%d\n", __func__, status);
@@ -79,7 +79,7 @@ int usb_refill_to_host(uint8_t ep)
 
 	local_irq_restore(x);
 
-	TRACE_DEBUG("%s (EP=0x%02x), in_progress=%d\r\n", __func__, ep, bep->in_progress);
+	TRACE_DEBUG("%s (EP=0x%02x), in_progress=%lu\r\n", __func__, ep, bep->in_progress);
 
 	msg->dst = bep;
 
@@ -92,7 +92,7 @@ int usb_refill_to_host(uint8_t ep)
 		local_irq_save(x);
 		bep->in_progress--;
 		local_irq_restore(x);
-		TRACE_DEBUG("%02x: in_progress=%d\n", bep->ep, bep->in_progress);
+		TRACE_DEBUG("%02x: in_progress=%lu\n", bep->ep, bep->in_progress);
 		return 0;
 	}
 
@@ -106,7 +106,7 @@ static void usb_read_cb(uint8_t *arg, uint8_t status, uint32_t transferred,
 	struct msgb *msg = (struct msgb *) arg;
 	struct usb_buffered_ep *bep = msg->dst;
 
-	TRACE_DEBUG("%s (EP=%u, len=%u, q=%p)\r\n", __func__,
+	TRACE_DEBUG("%s (EP=%u, len=%lu, q=%p)\r\n", __func__,
 			bep->ep, transferred, &bep->queue);
 
 	bep->in_progress = 0;
diff --git a/firmware/libcommon/source/simtrace_iso7816.c b/firmware/libcommon/source/simtrace_iso7816.c
index 8ee3f8c4..dc41c089 100644
--- a/firmware/libcommon/source/simtrace_iso7816.c
+++ b/firmware/libcommon/source/simtrace_iso7816.c
@@ -109,7 +109,7 @@ void mode_trace_usart1_irq(void)
 			/* Fill char into buffer */
 			rbuf_write(&sim_rcv_buf, c);
 		} else {
-			TRACE_DEBUG("e %x st: %x\n", c, stat);
+			TRACE_DEBUG("e %x st: %lx\n", c, stat);
 		}		/* else: error occurred */
 
 		char_stat = stat;