diff --git a/src/crc32.c b/src/crc32.c
index d5c8732..25cd53b 100644
--- a/src/crc32.c
+++ b/src/crc32.c
@@ -21,7 +21,6 @@
 #include "platform.h"
 #include "target.h"
 
-#if !defined(STM32F1) && !defined(STM32F4)
 static const uint32_t crc32_table[] = {
 	0x00000000, 0x04C11DB7, 0x09823B6E, 0x0D4326D9,
 	0x130476DC, 0x17C56B6B, 0x1A864DB2, 0x1E475005,
@@ -108,31 +107,4 @@ uint32_t generic_crc32(struct target_s *target, uint32_t base, int len)
 	}
 	return crc;
 }
-#else
-#include <libopencm3/stm32/crc.h>
-uint32_t generic_crc32(struct target_s *target, uint32_t base, int len)
-{
-	uint32_t data;
-	uint8_t byte;
 
-        CRC_CR |= CRC_CR_RESET;
-
-	while (len >3) {
-		if (target_mem_read_words(target, &data, base, 1) != 0)
-			return -1;
-
-		CRC_DR = data;
-		base+=4;
-                len -= 4;
-	}
-	while (len--) {
-		if (target_mem_read_bytes(target, &byte, base, 1) != 0)
-			return -1;
-
-		CRC_DR = byte;
-		base++;
-	}
-	return CRC_DR;
-}
-
-#endif