diff --git a/include/flags.h b/include/flags.h
index 7c670d4..48f88bd 100644
--- a/include/flags.h
+++ b/include/flags.h
@@ -31,11 +31,13 @@ const enum EXIT_CODES //exit codes you fucking idiot
 #define DEPRECATED __attribute__((deprecated)) //SAME COMMENT AS VERSIONS_NAME'S
 #define UNUSED __attribute__((unused)) //SAME COMMENT AS DEPRECATED'S
 
+typedef char boolean;
+
 typedef struct
 {
-    _Bool noCheck; //BOOLEAN FOR SKIPPING VERSION CHECK
-    _Bool noOutput; //BOOLEAN FOR NOT PRINTING OUTPUT WHEN ENCRYPTING/DECRYPTING
-    _Bool update; //BOOLEAN FOR UPDATING YOUR WHY VERSION IF OLD IS USED
+    boolean noCheck; //BOOLEAN FOR SKIPPING VERSION CHECK
+    boolean noOutput; //BOOLEAN FOR NOT PRINTING OUTPUT WHEN ENCRYPTING/DECRYPTING
+    boolean update; //BOOLEAN FOR UPDATING YOUR WHY VERSION IF OLD IS USED
 } inputFlags;
 
 typedef struct
@@ -45,7 +47,7 @@ typedef struct
     unsigned long unusedKeySize; //VARIABLE FOR COUNT OF UNUSED CHARACTERS IN KEY
     unsigned long repeatedKeySize; //VARIABLE FOR COUNT OF REPEATED CHARACTERS IN KEY (basically reversed unusedKeySize)
     unsigned long elapsedTime; //VARIABLE FOR ELAPSED TIME IN MICROSECONDS => 1s = 1000000µs
-    _Bool exitCode; //VARIABLE FOR EXIT CODE
+    boolean exitCode; //VARIABLE FOR EXIT CODE
 } outputFlags;
 
 //NOTE: Variables were moved to 'flags.c' to force y'all using getters
@@ -55,7 +57,7 @@ char getEncryptionSeparator();
 unsigned long getKeyLength();
 inputFlags defaultFlags(); //THIS GENERATES inputFlags WITH DEFAULT VALUES
 inputFlags getFlags(); //RETURNS USED FLAGS
-outputFlags noOutput(_Bool exitCode); //SAME AS defaultFlags() BUT FOR outputFlags
+outputFlags noOutput(boolean exitCode); //SAME AS defaultFlags() BUT FOR outputFlags
 
 //SETTERS
 void setEncryptionSeparator(char encryptionSeparatorNew);
diff --git a/include/misc.h b/include/misc.h
index b5029f8..5f86901 100644
--- a/include/misc.h
+++ b/include/misc.h
@@ -7,9 +7,9 @@
 
 void generateTextKeyChain(char *key, int *textKeyChain, int textKeyChainSize); //GENERATES ARRAY FOR ENCRYPTION/DECRYPTION
 void deallocateOutput(outputFlags flags); //DEALLOCATES flags
-_Bool checkVersion(); //THIS FUNCTION CHECKS IF LATEST VERSION OF WHY2 IS USED
-_Bool checkKey(char *key); //CHECKS IF KEY IS VALID
-_Bool checkText(char *text); //CHECKS IF TEXT IS VALID
+boolean checkVersion(); //THIS FUNCTION CHECKS IF LATEST VERSION OF WHY2 IS USED
+boolean checkKey(char *key); //CHECKS IF KEY IS VALID
+boolean checkText(char *text); //CHECKS IF TEXT IS VALID
 unsigned long countIntLength(int number); //RETURNS LENGTH OF number
 unsigned long countUnusedKeySize(char *text, char *key); //COUNT unusedKeySize
 unsigned long countRepeatedKeySize(char *text, char *key); //COUNT repeatedKeySize
diff --git a/src/lib/flags.c b/src/lib/flags.c
index 48f2789..0b7fd19 100644
--- a/src/lib/flags.c
+++ b/src/lib/flags.c
@@ -31,7 +31,7 @@ inputFlags getFlags()
     return flags;
 }
 
-outputFlags noOutput(_Bool exitCode)
+outputFlags noOutput(boolean exitCode)
 {
     char *emptyText = malloc(1); //TEXT
     emptyText[0] = '\0';
diff --git a/src/lib/misc.c b/src/lib/misc.c
index 68d7257..830695a 100644
--- a/src/lib/misc.c
+++ b/src/lib/misc.c
@@ -72,7 +72,7 @@ char *replaceWord(char *string, char *old, char *new) //CODE FROM: https://www.g
     return result;
 }
 
-_Bool checkVersion()
+boolean checkVersion()
 {
     if (getFlags().noCheck) return SUCCESS;
 
@@ -300,7 +300,7 @@ void deallocateOutput(outputFlags flags)
     free(flags.usedKey);
 }
 
-_Bool checkKey(char *key)
+boolean checkKey(char *key)
 {
     if (strlen(key) < getKeyLength())
     {
@@ -311,7 +311,7 @@ _Bool checkKey(char *key)
     return SUCCESS;
 }
 
-_Bool checkText(char *text)
+boolean checkText(char *text)
 {
     if (strcmp(text, "") == 0)
     {