diff --git a/src/chat/misc.c b/src/chat/misc.c
index be1e32b..f30bfb4 100644
--- a/src/chat/misc.c
+++ b/src/chat/misc.c
@@ -165,7 +165,7 @@ void *read_socket_raw_thread(void *socket)
 
 void remove_json_syntax_characters(char *text)
 {
-    for (size_t i = 0; i < strlen(text); i++) //TODO: DO SOMETHING MORE
+    for (int i = 0; text[i] != '\0'; i++) //TODO: DO SOMETHING MORE
     {
         if (text[i] == '\"')
         {
@@ -176,7 +176,7 @@ void remove_json_syntax_characters(char *text)
 
 void lowercase(char *string)
 {
-    for (unsigned long i = 0; i < strlen(string); i++)
+    for (int i = 0; string[i] != '\0'; i++)
     {
         string[i] = tolower(string[i]);
     }
@@ -201,7 +201,7 @@ why2_bool check_username(char *username)
     if (username_equal(username, WHY2_CHAT_SERVER_USERNAME)) return 0; //DISABLE 'server' USERNAME
     if (username_equal(username, WHY2_DEFAULT_USERNAME)) return 0; //DISABLE 'anon' USERNAME DUE TO ONE USERNAME PER SERVER
 
-    for (unsigned long i = 0; i < strlen(username); i++)
+    for (int i = 0; username[i] != '\0'; i++)
     {
         if (!((username[i] >= 48 && username[i] <= 57) ||
         (username[i] >= 65 && username[i] <= 90) ||     //CHECK ONLY FOR a-Z & 0-9
@@ -488,7 +488,7 @@ void *why2_communicate_thread(void *arg)
         raw_output = why2_strdup("");
 
         //REMOVE CONTROL CHARACTERS FROM raw
-        for (size_t i = 0; i < strlen(raw); i++)
+        for (int i = 0; raw[i] != '\0'; i++)
         {
             if (raw[i] == '\\') raw[i] = '/';
         }
diff --git a/src/core/lib/decrypter.c b/src/core/lib/decrypter.c
index 54ac32a..211ddb6 100644
--- a/src/core/lib/decrypter.c
+++ b/src/core/lib/decrypter.c
@@ -70,7 +70,7 @@ why2_output_flags why2_decrypt_text(char *text, char *keyNew)
     char *used_text = why2_strdup(text); //COPY text TO used_text
 
     //GET LENGTH OF returningText AND textKeyChain
-    for (int i = 0; i < (int) strlen(used_text); i++)
+    for (int i = 0; used_text[i] != '\0'; i++)
     {
         if (used_text[i] == why2_get_encryption_separator()) numberBuffer++;
     }
@@ -90,7 +90,7 @@ why2_output_flags why2_decrypt_text(char *text, char *keyNew)
         numberBuffer = 0;
 
         //GET LENGTH OF EACH CHARACTER
-        for (int j = 0; j < (int) strlen(used_text); j++)
+        for (int j = 0; used_text[i] != '\0'; j++)
         {
             if (used_text[j] == why2_get_encryption_separator()) break;
 
@@ -106,7 +106,7 @@ why2_output_flags why2_decrypt_text(char *text, char *keyNew)
         }
 
         //LOAD textBuffer
-        for (int j = 0; j < (int) strlen(used_text); j++)
+        for (int j = 0; used_text[i] != '\0'; j++)
         {
             textBuffer[j] = used_text[j];
 
diff --git a/src/core/lib/encrypter.c b/src/core/lib/encrypter.c
index 26ae7ba..fdd64e3 100644
--- a/src/core/lib/encrypter.c
+++ b/src/core/lib/encrypter.c
@@ -79,13 +79,13 @@ why2_output_flags why2_encrypt_text(char *text, char *keyNew)
     why2_generate_text_key_chain(key, textKeyChain, strlen(text));
 
     //ACTUALLY ENCRYPT TEXT
-    for (int i = 0; i < (int) strlen(text); i++)
+    for (int i = 0; text[i] != '\0'; i++)
     {
         textKeyChain[i] = why2_get_encryption_operation()(textKeyChain[i], (int) text[i]);
     }
 
     //COUNT REQUIRED SIZE FOR returningText
-    for (int i = 0; i < (int) strlen(text); i++)
+    for (int i = 0; text[i] != '\0'; i++)
     {
         numberBuffer += why2_count_int_length(textKeyChain[i]);
     }
@@ -94,7 +94,7 @@ why2_output_flags why2_encrypt_text(char *text, char *keyNew)
     returningText = why2_calloc(numberBuffer + strlen(text), sizeof(char));
 
     //LOAD returningText
-    for (int i = 0; i < (int) strlen(text); i++)
+    for (int i = 0; text[i] != '\0'; i++)
     {
         numberBuffer = sizeof(int) * why2_count_int_length(textKeyChain[i]);
 
diff --git a/src/logger/lib/logger.c b/src/logger/lib/logger.c
index 94958cb..52536e5 100644
--- a/src/logger/lib/logger.c
+++ b/src/logger/lib/logger.c
@@ -119,7 +119,7 @@ void why2_write_log(int loggerFile, char *logMessage)
 
     //COPY logMessage without '\n'
     char *logMessageUsed = why2_strdup(logMessage);
-    for (int i = 0; i < (int) strlen(logMessageUsed); i++)
+    for (int i = 0; logMessageUsed[i] != '\0'; i++)
     {
         if (logMessageUsed[i] == '\n') logMessageUsed[i] = '\0';
     }