diff --git a/ccminer.cpp b/ccminer.cpp
index 4cc0d46..7392886 100644
--- a/ccminer.cpp
+++ b/ccminer.cpp
@@ -138,7 +138,7 @@ enum sha_algos {
 	ALGO_KECCAK,
 	ALGO_JACKPOT,
 	ALGO_LUFFA_DOOM,
-	ALGO_LYRA,
+	ALGO_LYRA2,
 	ALGO_MJOLLNIR,		/* Hefty hash */
 	ALGO_MYR_GR,
 	ALGO_NIST5,
@@ -441,25 +441,28 @@ static bool jobj_binary(const json_t *obj, const char *key,
 
 static bool work_decode(const json_t *val, struct work *work)
 {
+	int data_size = sizeof(work->data), target_size = sizeof(work->target);
+	int adata_sz = ARRAY_SIZE(work->data), atarget_sz = ARRAY_SIZE(work->target);
 	int i;
-	
-	if (unlikely(!jobj_binary(val, "data", work->data, sizeof(work->data)))) {
+
+	if (unlikely(!jobj_binary(val, "data", work->data, data_size))) {
 		applog(LOG_ERR, "JSON inval data");
 		return false;
 	}
-	if (unlikely(!jobj_binary(val, "target", work->target, sizeof(work->target)))) {
+	if (unlikely(!jobj_binary(val, "target", work->target, target_size))) {
 		applog(LOG_ERR, "JSON inval target");
 		return false;
 	}
+
 	if (opt_algo == ALGO_HEAVY) {
 		if (unlikely(!jobj_binary(val, "maxvote", &work->maxvote, sizeof(work->maxvote)))) {
 			work->maxvote = 2048;
 		}
 	} else work->maxvote = 0;
 
-	for (i = 0; i < ARRAY_SIZE(work->data); i++)
+	for (i = 0; i < adata_sz; i++)
 		work->data[i] = le32dec(work->data + i);
-	for (i = 0; i < ARRAY_SIZE(work->target); i++)
+	for (i = 0; i < atarget_sz; i++)
 		work->target[i] = le32dec(work->target + i);
 
 	json_t *jr = json_object_get(val, "noncerange");
@@ -468,7 +471,8 @@ static bool work_decode(const json_t *val, struct work *work)
 		if (likely(hexstr)) {
 			// never seen yet...
 			hex2bin((uchar*)work->noncerange.u64, hexstr, 8);
-			applog(LOG_DEBUG, "received noncerange: %08x-%08x", work->noncerange.u32[0], work->noncerange.u32[1]);
+			applog(LOG_DEBUG, "received noncerange: %08x-%08x",
+				work->noncerange.u32[0], work->noncerange.u32[1]);
 		}
 	}
 
@@ -635,7 +639,7 @@ static bool submit_upstream_work(CURL *curl, struct work *work)
 
 		/* build JSON-RPC request */
 		sprintf(s,
-			"{\"method\": \"getwork\", \"params\": [ \"%s\" ], \"id\":1}\r\n",
+			"{\"method\": \"getwork\", \"params\": [\"%s\"], \"id\":4}\r\n",
 			str);
 
 		/* issue JSON-RPC request */
@@ -963,14 +967,23 @@ static void stratum_gen_work(struct stratum_ctx *sctx, struct work *work)
 		free(xnonce2str);
 	}
 
-	if (opt_algo == ALGO_JACKPOT)
-		diff_to_target(work->target, sctx->job.diff / (65536.0 * opt_difficulty));
-	else if (opt_algo == ALGO_FUGUE256 || opt_algo == ALGO_GROESTL || opt_algo == ALGO_DMD_GR || opt_algo == ALGO_FRESH)
-		diff_to_target(work->target, sctx->job.diff / (256.0 * opt_difficulty));
-	else if (opt_algo == ALGO_KECCAK)
-		diff_to_target(work->target, sctx->job.diff / (128.0 * opt_difficulty));
-	else
-		diff_to_target(work->target, sctx->job.diff / opt_difficulty);
+	switch (opt_algo) {
+		case ALGO_JACKPOT:
+			diff_to_target(work->target, sctx->job.diff / (65536.0 * opt_difficulty));
+			break;
+		case ALGO_DMD_GR:
+		case ALGO_FRESH:
+		case ALGO_FUGUE256:
+		case ALGO_GROESTL:
+		//case ALGO_QUBIT:
+			diff_to_target(work->target, sctx->job.diff / (256.0 * opt_difficulty));
+			break;
+		case ALGO_KECCAK:
+			diff_to_target(work->target, sctx->job.diff / (128.0 * opt_difficulty));
+			break;
+		default:
+			diff_to_target(work->target, sctx->job.diff / opt_difficulty);
+	}
 }
 
 static void *miner_thread(void *userdata)
@@ -1113,6 +1126,9 @@ static void *miner_thread(void *userdata)
 			case ALGO_X13:
 				minmax = 0x400000;
 				break;
+			case ALGO_LYRA2:
+				minmax = 0x100000;
+				break;
 			}
 			max64 = max(minmax-1, max64);
 		}
@@ -1263,8 +1279,8 @@ static void *miner_thread(void *userdata)
 			                      max_nonce, &hashes_done);
 			break;
 
-		case ALGO_LYRA:
-			rc = scanhash_lyra(thr_id, work.data, work.target,
+		case ALGO_LYRA2:
+			rc = scanhash_lyra2(thr_id, work.data, work.target,
 			                      max_nonce, &hashes_done);
 			break;
 
diff --git a/lyra2/cuda_lyra2.cu b/lyra2/cuda_lyra2.cu
index 3508d34..95d61f5 100644
--- a/lyra2/cuda_lyra2.cu
+++ b/lyra2/cuda_lyra2.cu
@@ -2,6 +2,8 @@
 
 #include "cuda_helper.h"
 
+#define TPB 256
+
 static __constant__ uint2 blake2b_IV[8] = {
 	{ 0xf3bcc908, 0x6a09e667 },
 	{ 0x84caa73b, 0xbb67ae85 },
@@ -282,10 +284,9 @@ static __device__ __forceinline__ void round_lyra_v30(uint64_t *s)
 	Gfunc_v30(s[3], s[4], s[9], s[14]);
 }
 
-__global__ __launch_bounds__(256, 1)
+__global__ __launch_bounds__(TPB, 1)
 void lyra2_gpu_hash_32_v30(int threads, uint32_t startNounce, uint64_t *outputHash)
 {
-
 	int thread = (blockDim.x * blockIdx.x + threadIdx.x);
 	if (thread < threads)
 	{
@@ -359,10 +360,9 @@ void lyra2_gpu_hash_32_v30(int threads, uint32_t startNounce, uint64_t *outputHa
 	} //thread
 }
 
-__global__ __launch_bounds__(256, 1)
+__global__ __launch_bounds__(TPB, 1)
 void lyra2_gpu_hash_32(int threads, uint32_t startNounce, uint64_t *outputHash)
 {
-
 	int thread = (blockDim.x * blockIdx.x + threadIdx.x);
 	if (thread < threads)
 	{
@@ -375,7 +375,7 @@ void lyra2_gpu_hash_32(int threads, uint32_t startNounce, uint64_t *outputHash)
 		for (int i = 0; i<8; i++) { state[i + 8] = blake2b_IV[i]; }
 
 		// blake2blyra x2
-		#pragma unroll 24
+		//#pragma unroll 24
 		for (int i = 0; i<24; i++) { round_lyra_v35(state); } //because 12 is not enough
 
 		uint2 Matrix[96][8]; // not cool
@@ -434,9 +434,9 @@ void lyra2_gpu_hash_32(int threads, uint32_t startNounce, uint64_t *outputHash)
 
 	} //thread
 }
-
-__global__
-void __launch_bounds__(256, 1) lyra2_gpu_hash_32_test(int threads, uint32_t startNounce, uint64_t *outputHash)
+#if 0
+__global__ __launch_bounds__(TPB, 1)
+void lyra2_gpu_hash_32_test(int threads, uint32_t startNounce, uint64_t *outputHash)
 {
 	int thread = (blockDim.x * blockIdx.x + threadIdx.x);
 	if (thread < threads)
@@ -508,6 +508,7 @@ void __launch_bounds__(256, 1) lyra2_gpu_hash_32_test(int threads, uint32_t star
 
 	} //thread
 }
+#endif
 
 __host__
 void lyra2_cpu_init(int thr_id, int threads)
@@ -518,7 +519,7 @@ void lyra2_cpu_init(int thr_id, int threads)
 __host__
 void lyra2_cpu_hash_32(int thr_id, int threads, uint32_t startNounce, uint64_t *d_outputHash, int order)
 {
-	const int threadsperblock = 256;
+	const int threadsperblock = TPB;
 
 	dim3 grid((threads + threadsperblock - 1) / threadsperblock);
 	dim3 block(threadsperblock);
diff --git a/lyra2/lyra2RE.cu b/lyra2/lyra2RE.cu
index 60ed22a..d1b047f 100644
--- a/lyra2/lyra2RE.cu
+++ b/lyra2/lyra2RE.cu
@@ -26,7 +26,7 @@ extern void groestl256_setTarget(const void *ptarget);
 extern uint32_t groestl256_cpu_hash_32(int thr_id, int threads, uint32_t startNounce, uint64_t *d_outputHash, int order);
 extern void groestl256_cpu_init(int thr_id, int threads);
 
-extern "C" void lyra_hash(void *state, const void *input)
+extern "C" void lyra2_hash(void *state, const void *input)
 {
 	sph_blake256_context     ctx_blake;
 	sph_keccak256_context    ctx_keccak;
@@ -58,7 +58,7 @@ extern "C" void lyra_hash(void *state, const void *input)
 
 static bool init[8] = { 0 };
 
-extern "C" int scanhash_lyra(int thr_id, uint32_t *pdata,
+extern "C" int scanhash_lyra2(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
@@ -107,7 +107,7 @@ extern "C" int scanhash_lyra(int thr_id, uint32_t *pdata,
 			const uint32_t Htarg = ptarget[7];
 			uint32_t vhash64[8];
 			be32enc(&endiandata[19], foundNonce);
-			lyra_hash(vhash64, endiandata);
+			lyra2_hash(vhash64, endiandata);
 
 			if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget)) {
 				*hashes_done = pdata[19] - first_nonce + throughput;
diff --git a/miner.h b/miner.h
index 59e3423..0a4219e 100644
--- a/miner.h
+++ b/miner.h
@@ -328,7 +328,7 @@ extern int scanhash_fresh(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done);
 
-extern int scanhash_lyra(int thr_id, uint32_t *pdata,
+extern int scanhash_lyra2(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done);
 
@@ -649,7 +649,7 @@ void heavycoin_hash(unsigned char* output, const unsigned char* input, int len);
 void keccak256_hash(void *state, const void *input);
 unsigned int jackpothash(void *state, const void *input);
 void groestlhash(void *state, const void *input);
-void lyra_hash(void *state, const void *input);
+void lyra2_hash(void *state, const void *input);
 void myriadhash(void *state, const void *input);
 void nist5hash(void *state, const void *input);
 void pentablakehash(void *output, const void *input);
diff --git a/util.cpp b/util.cpp
index 07564f4..e88f9df 100644
--- a/util.cpp
+++ b/util.cpp
@@ -1646,7 +1646,7 @@ void print_hash_tests(void)
 	printpfx("luffa", hash);
 
 	memset(hash, 0, sizeof hash);
-	lyra_hash(&hash[0], &buf[0]);
+	lyra2_hash(&hash[0], &buf[0]);
 	printpfx("lyra2", hash);
 
 	memset(hash, 0, sizeof hash);