diff --git a/README.md b/README.md
index 1c6db20..da0b4c5 100644
--- a/README.md
+++ b/README.md
@@ -9,9 +9,7 @@ Please make sure that you have installed Nvidia driver for you GPU. You could ve
 1. Build the miner by running `curl -L https://github.com/alephium/gpu-miner/raw/master/get-miner.sh | bash`
 2. Run `gpu-miner/run-miner.sh` to start the miner
 
-You could specify the miner api with `-a broker` parameters, GPU indexes with `-g 1 2` and enable the alternate GPU init with '-n'.
-
-The alternate GPU init shouldn't have much impact on linux, but is very important on windows.
+You could specify the miner api with `-a broker` parameters, GPU indexes with `-g 1 2` and enable the alternate GPU init with '-o'. The alternate GPU init might improve performance for some cards.
 
 ### Windows miner from source code
 
@@ -32,8 +30,6 @@ The alternate GPU init shouldn't have much impact on linux, but is very importan
 
 Executable file will be generated in `your-gpu-miner-dir/bin/` directory.
 
-For best results, try to start the gpu-miner on windows using the alternate GPU init with '-n', as it can improve massively the mining speed on windows.
-
 If you have any questions, please reach out to us on Discord.
 
 ### Pre-built miner
diff --git a/src/blake3.cu b/src/blake3.cu
index 575340a..0b3b8fc 100644
--- a/src/blake3.cu
+++ b/src/blake3.cu
@@ -519,7 +519,7 @@ void config_cuda(int device_id, int *grid_size, int *block_size, int new_grid_ca
     cudaOccupancyMaxPotentialBlockSize(grid_size, block_size, blake3_hasher_mine);
 
     int cores_size = get_device_cores(device_id);
-    if (new_grid_calc == 1){
+    if (new_grid_calc) {
         cudaDeviceProp props;
         cudaGetDeviceProperties(&props, device_id);
         *grid_size = props.multiProcessorCount;
diff --git a/src/main.cu b/src/main.cu
index 2b28a28..dba1de9 100644
--- a/src/main.cu
+++ b/src/main.cu
@@ -336,9 +336,9 @@ int main(int argc, char **argv)
     char broker_ip[16];
     strcpy(broker_ip, "127.0.0.1");
 
-    int new_grid_calc = 0;
+    bool new_grid_calc = false;
     int command;
-    while ((command = getopt(argc, argv, "g:a:n")) != -1)
+    while ((command = getopt(argc, argv, "g:a:o")) != -1)
     {
         switch (command)
         {
@@ -370,8 +370,8 @@ int main(int argc, char **argv)
                 use_device[device] = true;
             }
             break;
-        case 'n':
-            new_grid_calc = true;
+        case 'o':
+            new_grid_calc = false;
             break;
         default:
             printf("Invalid command %c\n", command);