diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h
index 188039e0f4..ff69eaad2f 100644
--- a/payloads/libpayload/include/libpayload.h
+++ b/payloads/libpayload/include/libpayload.h
@@ -178,7 +178,7 @@ u8 hex2bin(u8 h);
 void *memset(void *s, int c, size_t n);
 void *memcpy(void *dst, const void *src, size_t n);
 void *memmove(void *dst, const void *src, size_t n);
-int memcmp(const char *s1, const char *s2, size_t len);
+int memcmp(const void *s1, const void *s2, size_t len);
 
 /* libc/printf.c */
 int snprintf(char *str, size_t size, const char *fmt, ...);
diff --git a/payloads/libpayload/libc/memory.c b/payloads/libpayload/libc/memory.c
index 57c31e0bb3..eb9fecc94c 100644
--- a/payloads/libpayload/libc/memory.c
+++ b/payloads/libpayload/libc/memory.c
@@ -107,8 +107,8 @@ void *memmove(void *dst, const void *src, size_t n)
  * @return If len is 0, return zero. If the areas match, return zero.
  *         Otherwise return non-zero.
  */
-int memcmp(const char *s1, const char *s2, size_t len)
+int memcmp(const void *s1, const void *s2, size_t len)
 {
-	for (; len && *s1++ == *s2++; len--) ;
+	for (; len && *(char *)s1++ == *(char *)s2++; len--) ;
 	return len;
 }