diff --git a/src/inputHandler.c b/src/inputHandler.c
index 39af339..47e5df1 100644
--- a/src/inputHandler.c
+++ b/src/inputHandler.c
@@ -1,7 +1,8 @@
 #include "inputHandler.h"
 #include <string.h>
 
-int getOperationId(char symbol) {
+// return operation id for a specific symbol
+int getOperationIdBySymbol(char symbol) {
     int id = 0;
     switch (symbol) {
         case '+':
@@ -23,7 +24,7 @@ int getOperationId(char symbol) {
 }
 
 // returns operation symbol for a specific operation id
-char getOperationSymbol(int id) {
+char getOperationSymbolById(int id) {
     char symbol = ' ';
     switch (id) {
         case 1:
@@ -45,7 +46,7 @@ char getOperationSymbol(int id) {
 }
 
 // Checking if operation id is available
-int isOperationValid(int id) {
+int isOperationIdValid(int id) {
     if(id < 0 || id > 7) return 0;
     return 1;
 }
\ No newline at end of file
diff --git a/src/inputHandler.h b/src/inputHandler.h
index 107f49e..6e4e4d5 100644
--- a/src/inputHandler.h
+++ b/src/inputHandler.h
@@ -1,10 +1,10 @@
 #ifndef THEADMIRALS_INPUTHANDLER_H
 #define THEADMIRALS_INPUTHANDLER_H
 
-int getOperationId(char);
+int getOperationIdBySymbol(char);
 
-char getOperationSymbol(int);
+char getOperationSymbolById(int);
 
-int isOperationValid(int);
+int isOperationIdValid(int);
 
 #endif //THEADMIRALS_INPUTHANDLER_H