diff --git a/driver-opencl.c b/driver-opencl.c
index 8b28bb7a..4dea389f 100644
--- a/driver-opencl.c
+++ b/driver-opencl.c
@@ -1157,7 +1157,7 @@ static void opencl_detect(bool hotplug)
       cgpu->threads = 1;
 #endif
     cgpu->virtual_gpu = i;
-    cgpu->algorithm = *opt_algorithm;
+    cgpu->algorithm = opt_algorithm;
     add_cgpu(cgpu);
   }
 
diff --git a/miner.h b/miner.h
index c3356d51..fcf419ef 100644
--- a/miner.h
+++ b/miner.h
@@ -990,7 +990,7 @@ extern int opt_queue;
 extern int opt_scantime;
 extern int opt_expiry;
 
-extern algorithm_t *opt_algorithm;
+extern algorithm_t opt_algorithm;
 
 extern cglock_t control_lock;
 extern pthread_mutex_t hash_lock;
diff --git a/sgminer.c b/sgminer.c
index 2f2a2605..009d6110 100644
--- a/sgminer.c
+++ b/sgminer.c
@@ -98,7 +98,7 @@ int opt_queue = 1;
 int opt_scantime = 7;
 int opt_expiry = 28;
 
-algorithm_t *opt_algorithm;
+algorithm_t opt_algorithm;
 
 unsigned long long global_hashrate;
 unsigned long global_quota_gcd = 1;
@@ -528,7 +528,7 @@ struct pool *add_pool(void)
   pool->name = strdup(buf);
 
   /* Algorithm */
-  pool->algorithm = *opt_algorithm;
+  pool->algorithm = opt_algorithm;
 
   pools = (struct pool **)realloc(pools, sizeof(struct pool *) * (total_pools + 2));
   pools[total_pools++] = pool;
@@ -1117,8 +1117,8 @@ static void load_temp_cutoffs()
 static char *set_algo(const char *arg)
 {
   if ((json_array_index < 0) || (total_pools == 0)) {
-    set_algorithm(opt_algorithm, arg);
-    applog(LOG_INFO, "Set default algorithm to %s", opt_algorithm->name);
+    set_algorithm(&opt_algorithm, arg);
+    applog(LOG_INFO, "Set default algorithm to %s", opt_algorithm.name);
   } else {
     set_pool_algorithm(arg);
   }
@@ -1129,9 +1129,9 @@ static char *set_algo(const char *arg)
 static char *set_nfactor(const char *arg)
 {
   if ((json_array_index < 0) || (total_pools == 0)) {
-    set_algorithm_nfactor(opt_algorithm, (const uint8_t) atoi(arg));
+    set_algorithm_nfactor(&opt_algorithm, (const uint8_t) atoi(arg));
     applog(LOG_INFO, "Set algorithm N-factor to %d (N to %d)",
-           opt_algorithm->nfactor, opt_algorithm->n);
+           opt_algorithm.nfactor, opt_algorithm.n);
   } else {
     set_pool_nfactor(arg);
   }
@@ -4414,7 +4414,7 @@ void write_config(FILE *fcfg)
     if (strcmp(pool->description, "") != 0) {
       fprintf(fcfg, ",\n\t\t\"description\" : \"%s\"", json_escape(pool->description));
     }
-    if (!cmp_algorithm(&pool->algorithm, opt_algorithm)) {
+    if (!cmp_algorithm(&pool->algorithm, &opt_algorithm)) {
       fprintf(fcfg, ",\n\t\t\"algorithm\" : \"%s\"", json_escape(pool->algorithm.name));
     }
     if (pool->prio != i) {
@@ -4591,8 +4591,8 @@ void write_config(FILE *fcfg)
   }
   if (opt_removedisabled)
     fprintf(fcfg, ",\n\"remove-disabled\" : true");
-  if (strcmp(opt_algorithm->name, "scrypt") != 0)
-    fprintf(fcfg, ",\n\"algorithm\" : \"%s\"", json_escape(opt_algorithm->name));
+  if (strcmp(opt_algorithm.name, "scrypt") != 0)
+    fprintf(fcfg, ",\n\"algorithm\" : \"%s\"", json_escape(opt_algorithm.name));
   if (opt_api_allow)
     fprintf(fcfg, ",\n\"api-allow\" : \"%s\"", json_escape(opt_api_allow));
   if (strcmp(opt_api_mcast_addr, API_MCAST_ADDR) != 0)
@@ -7409,7 +7409,7 @@ static bool input_pool(bool live)
   desc = curses_input("Description (optional)");
   if (strcmp(desc, "-1") == 0) strcpy(desc, "");
   algo = curses_input("Algorithm (optional)");
-  if (strcmp(algo, "-1") == 0) strcpy(algo, opt_algorithm->name);
+  if (strcmp(algo, "-1") == 0) strcpy(algo, opt_algorithm.name);
 
   pool = add_pool();
 
@@ -7919,8 +7919,7 @@ int main(int argc, char *argv[])
 #endif
 
   /* Default algorithm specified in algorithm.c ATM */
-  opt_algorithm = (algorithm_t *)alloca(sizeof(algorithm_t));
-  set_algorithm(opt_algorithm, "scrypt");
+  set_algorithm(&opt_algorithm, "scrypt");
 
   devcursor = 8;
   logstart = devcursor + 1;