diff --git a/lyra2/Sponge.c b/lyra2/Sponge.c
index bdf4397..e0a001e 100644
--- a/lyra2/Sponge.c
+++ b/lyra2/Sponge.c
@@ -744,7 +744,7 @@ inline void reducedDuplexRowd(uint64_t *state, uint64_t *rowIn, uint64_t *rowInO
  Prints an array of unsigned chars
  */
 void printArray(unsigned char *array, unsigned int size, char *name) {
-	int i;
+	unsigned int i;
 	printf("%s: ", name);
 	for (i = 0; i < size; i++) {
 		printf("%2x|", array[i]);
diff --git a/lyra2/lyra2RE.cu b/lyra2/lyra2RE.cu
index 03003ce..60ed22a 100644
--- a/lyra2/lyra2RE.cu
+++ b/lyra2/lyra2RE.cu
@@ -11,11 +11,6 @@ extern "C" {
 
 static _ALIGN(64) uint64_t *d_hash[8];
 
-extern void quark_check_cpu_init(int thr_id, int threads);
-extern void quark_check_cpu_setTarget(const void *ptarget);
-extern uint32_t quark_check_cpu_hash_64(int thr_id, int threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_inputHash, int order);
-extern uint32_t quark_check_cpu_hash_64_2(int thr_id, int threads, uint32_t startNounce, uint32_t *d_nonceVector, uint64_t *d_inputHash, int order);
-
 extern void blake256_cpu_init(int thr_id, int threads);
 extern void blake256_cpu_hash_80(const int thr_id, const uint32_t threads, const uint32_t startNonce, uint64_t *Hash, int order);
 extern void blake256_cpu_setBlock_80(uint32_t *pdata);
@@ -68,7 +63,7 @@ extern "C" int scanhash_lyra(int thr_id, uint32_t *pdata,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	int intensity = (device_sm[device_map[thr_id]] >= 500) ? 19 : 18;
+	int intensity = (device_sm[device_map[thr_id]] >= 500 && !is_windows()) ? 19 : 18;
 	int throughput = opt_work_size ? opt_work_size : (1 << intensity); // 18=256*256*4;
 	throughput = min(throughput, (int)(max_nonce - first_nonce));