diff --git a/README.md b/README.md
index eeec206..fc8ce02 100644
--- a/README.md
+++ b/README.md
@@ -40,10 +40,6 @@ in library `inc/` folder and you need to point your compiler `-I` flag there.
 After you have your environment set you need to enter below flow to your program.
 
 ```C
-/* Before include, make sure you have BITS_PER_LONG defined. This is a CPU
- * specific value which is used to generate bit masks. You can also use -D
- * to input definition to compiler via command line
- */
 #include "mlx90632.h"
 
 /* Declare and implement here functions you find in mlx90632_depends.h */
@@ -90,10 +86,6 @@ in library `inc/` folder and you need to point your compiler `-I` flag there.
 After you have your environment set you need to enter below flow to your program.
 
 ```C
-/* Before include, make sure you have BITS_PER_LONG defined. This is a CPU
- * specific value which is used to generate bit masks. You can also use -D
- * to input definition to compiler via command line
- */
 #include "mlx90632.h"
 
 /* Declare and implement here functions you find in mlx90632_depends.h */
@@ -109,14 +101,14 @@ int main(void)
     double object; /**< Object temperature in degrees Celsius */
 
     /* Read sensor EEPROM registers needed for calcualtions */
-    
+
     /* You can check if the device supports extended measurement mode */
     ret = mlx90632_init();
     if(status == ERANGE)
     {
        /* Extended mode is supported */
     }
-    
+
     /* Set MLX90632 in extended mode */
     ret = mlx90632_set_meas_type(MLX90632_MTYP_EXTENDED)
     if(ret < 0)
@@ -131,15 +123,15 @@ int main(void)
 
     /* Now start calculations (no more i2c accesses) */
     /* Calculate ambient temperature */
-    ambient = mlx90632_calc_temp_ambient_extended(ambient_new_raw, ambient_old_raw, 
+    ambient = mlx90632_calc_temp_ambient_extended(ambient_new_raw, ambient_old_raw,
                                                   PT, PR, PG, PO, Gb);
-    
+
     /* Get preprocessed temperatures needed for object temperature calculation */
     double pre_ambient = mlx90632_preprocess_temp_ambient_extended(ambient_new_raw,
                                                                    ambient_old_raw, Gb);
     double pre_object = mlx90632_preprocess_temp_object_extended(object_new_raw, ambient_new_raw,
                                                                  ambient_old_raw, Ka);
-    
+
     /* Calculate object temperature assuming the reflected temperature equals ambient*/
     object = mlx90632_calc_temp_object_extended(pre_object, pre_ambient, ambient, Ea, Eb, Ga, Fa, Fb, Ha, Hb);
 }
@@ -152,10 +144,6 @@ in library `inc/` folder and you need to point your compiler `-I` flag there.
 After you have your environment set you need to enter below flow to your program.
 
 ```C
-/* Before include, make sure you have BITS_PER_LONG defined. This is a CPU
- * specific value which is used to generate bit masks. You can also use -D
- * to input definition to compiler via command line
- */
 #include "mlx90632.h"
 
 /* Declare and implement here functions you find in mlx90632_depends.h */
@@ -171,7 +159,7 @@ int main(void)
     double object; /**< Object temperature in degrees Celsius */
 
     /* Read sensor EEPROM registers needed for calcualtions */
-    
+
     /* Set MLX90632 in burst mode */
     ret = mlx90632_set_meas_type(MLX90632_MTYP_MEDICAL_BURST)
     if(ret < 0)
@@ -208,10 +196,6 @@ in library `inc/` folder and you need to point your compiler `-I` flag there.
 After you have your environment set you need to enter below flow to your program.
 
 ```C
-/* Before include, make sure you have BITS_PER_LONG defined. This is a CPU
- * specific value which is used to generate bit masks. You can also use -D
- * to input definition to compiler via command line
- */
 #include "mlx90632.h"
 
 /* Declare and implement here functions you find in mlx90632_depends.h */
@@ -227,14 +211,14 @@ int main(void)
     double object; /**< Object temperature in degrees Celsius */
 
     /* Read sensor EEPROM registers needed for calcualtions */
-    
+
     /* You can check if the device supports extended measurement mode */
     ret = mlx90632_init();
     if(status == ERANGE)
     {
        /* Extended mode is supported */
     }
-    
+
     /* Set MLX90632 in extended burst mode */
     ret = mlx90632_set_meas_type(MLX90632_MTYP_EXTENDED_BURST)
     if(ret < 0)
@@ -249,15 +233,15 @@ int main(void)
 
     /* Now start calculations (no more i2c accesses) */
     /* Calculate ambient temperature */
-    ambient = mlx90632_calc_temp_ambient_extended(ambient_new_raw, ambient_old_raw, 
+    ambient = mlx90632_calc_temp_ambient_extended(ambient_new_raw, ambient_old_raw,
                                                   PT, PR, PG, PO, Gb);
-    
+
     /* Get preprocessed temperatures needed for object temperature calculation */
     double pre_ambient = mlx90632_preprocess_temp_ambient_extended(ambient_new_raw,
                                                                    ambient_old_raw, Gb);
     double pre_object = mlx90632_preprocess_temp_object_extended(object_new_raw, ambient_new_raw,
                                                                  ambient_old_raw, Ka);
-    
+
     /* Calculate object temperature assuming the reflected temperature equals ambient*/
     object = mlx90632_calc_temp_object_extended(pre_object, pre_ambient, ambient, Ea, Eb, Ga, Fa, Fb, Ha, Hb);
 }
@@ -272,6 +256,6 @@ faster development with automatic mocking ([CMock](http://www.throwtheswitch.org
 and wider range of unit test macros ([Unity](http://www.throwtheswitch.org/unity/)).
 Because of it, cloning repository requires adding a `--recursive` flag
 (so `git clone --recursive <url> <destination>`) or initialization of submodules
-afterwards using `git submodule update --init --recursive`. 
+afterwards using `git submodule update --init --recursive`.
 
 
diff --git a/doxygen/main.dox b/doxygen/main.dox
index 7591df1..4972503 100644
--- a/doxygen/main.dox
+++ b/doxygen/main.dox
@@ -35,10 +35,6 @@
  * After you have your environment set you need to enter below flow to your program.
  *
  * \code{.c}
- * /* Before include, make sure you have BITS_PER_LONG defined. This is a CPU
- *  * specific value which is used to generate bit masks. You can also use -D
- *  * to input definition to compiler via command line
- *  */
  * #include "mlx90632.h"
  *
  * /* Declare and implement here functions you find in mlx90632_depends.h */
diff --git a/inc/mlx90632.h b/inc/mlx90632.h
index 64c0461..04d1ffa 100644
--- a/inc/mlx90632.h
+++ b/inc/mlx90632.h
@@ -64,10 +64,6 @@
 #define BIT(x)(1U << (x))
 #endif
 #ifndef GENMASK
-#ifndef BITS_PER_LONG
-#warning "Using default BITS_PER_LONG value"
-#define BITS_PER_LONG 64 /**< Define how many bits per long your CPU has */
-#endif
 #define GENMASK(h, l) \
         ((((1U << h) - 1) | (1U << h)) & ~((1U << l) - 1))
 #endif