diff --git a/src/include/general.h b/src/include/general.h
index 91b230b..b29d039 100644
--- a/src/include/general.h
+++ b/src/include/general.h
@@ -22,6 +22,7 @@
 #define __GENERAL_H
 
 #define _GNU_SOURCE
+#define __USE_MINGW_ANSI_STDIO 1
 #include <stdint.h>
 #include <stdbool.h>
 #include <stdlib.h>
@@ -44,15 +45,5 @@
 #undef MAX
 #define MAX(x, y)  (((x) > (y)) ? (x) : (y))
 
-#ifdef _WIN32
-#  ifdef _WIN64
-#    define PRI_SIZET PRIu64
-#  else
-#    define PRI_SIZET PRIu32
-#  endif
-#else
-#  define PRI_SIZET "zu"
-#endif
-
 #endif
 
diff --git a/src/platforms/pc-stlinkv2/stlinkv2.c b/src/platforms/pc-stlinkv2/stlinkv2.c
index f637947..6c7cd46 100644
--- a/src/platforms/pc-stlinkv2/stlinkv2.c
+++ b/src/platforms/pc-stlinkv2/stlinkv2.c
@@ -398,7 +398,7 @@ static int send_recv(uint8_t *txbuf, size_t txsize,
 		if (res >0) {
 			int i;
 			uint8_t *p = rxbuf;
-			DEBUG_USB(" Rec (%" PRI_SIZET "/%d)", rxsize, res);
+			DEBUG_USB(" Rec (%zu/%d)", rxsize, res);
 			for (i = 0; i < res && i < 32 ; i++) {
 				if ( i && ((i & 7) == 0))
 					DEBUG_USB(".");
@@ -1233,7 +1233,7 @@ void stlink_readmem(ADIv5_AP_t *ap, void *dest, uint32_t src, size_t len)
 		type = STLINK_DEBUG_READMEM_32BIT;
 
 	}
-	DEBUG_STLINK("%s len %" PRI_SIZET " addr 0x%08" PRIx32 " AP %d : ",
+	DEBUG_STLINK("%s len %zu addr 0x%08" PRIx32 " AP %d : ",
 				 CMD, len, src, ap->apsel);
 	uint8_t cmd[16] = {
 		STLINK_DEBUG_COMMAND,
@@ -1263,7 +1263,7 @@ void stlink_readmem(ADIv5_AP_t *ap, void *dest, uint32_t src, size_t len)
 void stlink_writemem8(ADIv5_AP_t *ap, uint32_t addr, size_t len,
 					  uint8_t *buffer)
 {
-	DEBUG_STLINK("Mem Write8 AP %d len %" PRI_SIZET " addr 0x%08" PRIx32 ": ",
+	DEBUG_STLINK("Mem Write8 AP %d len %zu addr 0x%08" PRIx32 ": ",
 				 ap->apsel, len, addr);
 	for (size_t t = 0; t < len; t++) {
 		DEBUG_STLINK("%02x", buffer[t]);
@@ -1292,7 +1292,7 @@ void stlink_writemem8(ADIv5_AP_t *ap, uint32_t addr, size_t len,
 void stlink_writemem16(ADIv5_AP_t *ap, uint32_t addr, size_t len,
 					   uint16_t *buffer)
 {
-	DEBUG_STLINK("Mem Write16 AP %d len %" PRI_SIZET " addr 0x%08" PRIx32 ": ",
+	DEBUG_STLINK("Mem Write16 AP %d len %zu addr 0x%08" PRIx32 ": ",
 				 ap->apsel, len, addr);
 	for (size_t t = 0; t < len; t+=2) {
 		DEBUG_STLINK("%04x", buffer[t]);
@@ -1312,7 +1312,7 @@ void stlink_writemem16(ADIv5_AP_t *ap, uint32_t addr, size_t len,
 void stlink_writemem32(ADIv5_AP_t *ap, uint32_t addr, size_t len,
 					   uint32_t *buffer)
 {
-	DEBUG_STLINK("Mem Write32 AP %d len %" PRI_SIZET " addr 0x%08" PRIx32 ": ",
+	DEBUG_STLINK("Mem Write32 AP %d len %zu addr 0x%08" PRIx32 ": ",
 				 ap->apsel, len, addr);
 	for (size_t t = 0; t < len; t+=4) {
 		DEBUG_STLINK("%04x", buffer[t]);
diff --git a/src/target/msp432.c b/src/target/msp432.c
index ceffa66..79cf241 100644
--- a/src/target/msp432.c
+++ b/src/target/msp432.c
@@ -298,7 +298,7 @@ static int msp432_flash_write(struct target_flash *f, target_addr dest,
 	regs[1] = dest;              // Flash address to be write to in R1
 	regs[2] = len;               // Size of buffer to be flashed in R2
 
-	DEBUG("Writing 0x%04" PRIX32 " bytes at 0x%08" PRI_SIZET "\n", dest, len);
+	DEBUG("Writing 0x%04" PRIX32 " bytes at 0x%08zu\n", dest, len);
 	/* Call ROM */
 	msp432_call_ROM(t, mf->FlashCtl_programMemory, regs);