diff --git a/README.md b/README.md
index 7e3295d..f8264aa 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,8 @@ To use the logging system, include `log.h` in your source file, and use the foll
 LOG_DEBUG(TAG, fmt, ...)
 LOG_INFO(TAG, fmt, ...)
 LOG_WARN(TAG, fmt, ...)
-LOG_ERROR(TAG, fmt, ...)
+LOG_CRIT(TAG, fmt, ...)
+LOG_FATAL(TAG, fmt, ...)
 ```
 The same format specifiers as in `printf` can be used.
 
@@ -73,7 +74,13 @@ before you include `log.h`, you can define custom log levels by defining the fol
 
 ```c
 // Only log messages with level ERROR will be printed
-#define LOGGER_LEVEL_ERROR
+#define LOGGER_LEVEL_CRITICAL
+#include "log.h"
+```
+
+```c
+// Only log messages with level ERROR will be printed
+#define LOGGER_LEVEL_FATAL
 #include "log.h"
 ```
 
@@ -84,7 +91,7 @@ Default is `0`
 ### Log Output Format
 Each log entry is formatted to include the following information:
 
- - Log level ([Debug], [Info], [Warn], [Error])
+ - Log level ([Debug], [Info], [Warn], [Critical], [Fatal])
  - Timestamp (in milliseconds since boot)
  - Tag
  - The log message
@@ -106,7 +113,8 @@ int main(void) {
     LOG_DEBUG(TAG, "This message will not be printed");
     LOG_INFO(TAG, "This message will be printed");
     LOG_WARN(TAG, "This message will be printed");
-    LOG_ERROR(TAG, "This message will be printed");
+    LOG_CRIT(TAG, "This message will be printed");
+    LOG_FATAL(TAG, "This message will be printed");
     
     for (int i = 0; i < 3; i++) {
         LOG_INFO(TAG, "Iteration %d of %d", i, 3);
@@ -117,10 +125,11 @@ int main(void) {
 ```
 Result:
 ```
-[Info]    (2009) main: This message will be printed
-[Warning] (2026) main: This message will be printed
-[Error]   (2033) main: This message will be printed
-[Info]    (2040) main: Iteration 0 of 3
-[Info]    (2047) main: Iteration 1 of 3
-[Info]    (2054) main: Iteration 2 of 3
+[Info]     (2009) main: This message will be printed
+[Warning]  (2026) main: This message will be printed
+[CRITICAL] (2033) main: This message will be printed
+[FATAL]    (2040) main: This message will be printed
+[Info]     (2040) main: Iteration 0 of 3
+[Info]     (2047) main: Iteration 1 of 3
+[Info]     (2054) main: Iteration 2 of 3
 ```
diff --git a/project/Core/Inc/log.h b/project/Core/Inc/log.h
index 0ffb2c0..72d206c 100644
--- a/project/Core/Inc/log.h
+++ b/project/Core/Inc/log.h
@@ -18,7 +18,10 @@
 #include <sys/times.h>
 #include <sys/unistd.h>
 
-#ifdef LOGGER_LEVEL_ERROR
+#if LOGGER_LEVEL_FATAL
+#define LOGGER_LEVEL 5
+#endif
+#ifdef LOGGER_LEVEL_CRITICAL
 #define LOGGER_LEVEL 4
 #endif
 #ifdef LOGGER_LEVEL_WARN
@@ -66,37 +69,44 @@
 
 #if LOGGER_USE_COLOR == 1
 #define LOG_RESET_COLOR "\033[0m"
-#define LOG_COLOR_E     "\033[0;31m"    // Red
+#define LOG_COLOR_F     "\033[0;31m"    // Red
+#define LOG_COLOR_C     "\033[0;31m"    // Red
 #define LOG_COLOR_W     "\033[0;33m"    // Brown
 #define LOG_COLOR_I     "\033[0;32m"    // Green
 #define LOG_COLOR_D     LOG_RESET_COLOR // Default
 #else
 #define LOG_RESET_COLOR
-#define LOG_COLOR_E
+#define LOG_COLOR_F
+#define LOG_COLOR_C
 #define LOG_COLOR_W
 #define LOG_COLOR_I
 #define LOG_COLOR_D
 #endif
 
 #if LOGGER_LEVEL <= 1
-#define LOG_DEBUG(tag, fmt, ...) printf(LOG_Color_D"[Debug]   (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_DEBUG(tag, fmt, ...) printf(LOG_Color_D"[Debug]     (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_DEBUG(tag, fmt, ...)
 #endif
 #if LOGGER_LEVEL <= 2
-#define LOG_INFO(tag, fmt, ...)  printf(LOG_COLOR_I"[Info]    (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_INFO(tag, fmt, ...)  printf(LOG_COLOR_I"[Info]      (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_INFO(tag, fmt, ...)
 #endif
 #if LOGGER_LEVEL <= 3
-#define LOG_WARN(tag, fmt, ...)  printf(LOG_COLOR_W"[Warning] (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_WARN(tag, fmt, ...)  printf(LOG_COLOR_W"[Warning]   (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_WARN(tag, fmt, ...)
 #endif
 #if LOGGER_LEVEL <= 4
-#define LOG_ERROR(tag, fmt, ...)   printf(LOG_COLOR_E"[Error]   (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_CRIT(tag, fmt, ...)   printf(LOG_COLOR_C"[Critical] (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
-#define LOG_ERROR(tag, fmt, ...)
+#define LOG_CRIT(tag, fmt, ...)
+#endif
+#if LOGGER_LEVEL <= 4
+#define LOG_FATAL(tag, fmt, ...)   printf(LOG_COLOR_F"[Fatal]   (%lu) [%s]: "fmt LOG_RESET_COLOR, logger_get_timestamp(), tag, ##__VA_ARGS__)
+#else
+#define LOG_FATAL(tag, fmt, ...)
 #endif
 
 /* For internal use only.