diff --git a/src/flash/nor/pic32mx.c b/src/flash/nor/pic32mx.c
index 99b841991..b214642a0 100644
--- a/src/flash/nor/pic32mx.c
+++ b/src/flash/nor/pic32mx.c
@@ -817,7 +817,7 @@ static int pic32mx_info(struct flash_bank *bank, char *buf, int buf_size)
 
 	if (((device_id >> 1) & 0x7ff) != PIC32MX_MANUF_ID) {
 		snprintf(buf, buf_size,
-				 "Cannot identify target as a PIC32MX family (manufacturer 0x%03d != 0x%03d)\n",
+				 "Cannot identify target as a PIC32MX family (manufacturer 0x%03x != 0x%03x)\n",
 				 (unsigned)((device_id >> 1) & 0x7ff),
 				 PIC32MX_MANUF_ID);
 		return ERROR_FLASH_OPERATION_FAILED;
diff --git a/src/target/image.c b/src/target/image.c
index 9bd8f6b0c..1003c3bdc 100644
--- a/src/target/image.c
+++ b/src/target/image.c
@@ -497,7 +497,7 @@ static int image_elf_read_section(struct image *image,
 	if (offset < field32(elf, segment->p_filesz)) {
 		/* maximal size present in file for the current segment */
 		read_size = MIN(size, field32(elf, segment->p_filesz) - offset);
-		LOG_DEBUG("read elf: size = 0x%zu at 0x%" PRIx32 "", read_size,
+		LOG_DEBUG("read elf: size = 0x%zx at 0x%" PRIx32 "", read_size,
 			field32(elf, segment->p_offset) + offset);
 		/* read initialized area of the segment */
 		retval = fileio_seek(elf->fileio, field32(elf, segment->p_offset) + offset);