diff --git a/src/helperFunctions.c b/src/helperFunctions.c
index 740c5a0..2fc211e 100644
--- a/src/helperFunctions.c
+++ b/src/helperFunctions.c
@@ -142,10 +142,10 @@ double balanceToDouble(char *balanceAsString)
 	return sign * result / power;
 }
 
-unsigned int calLen(char *str){
-	int len = 0;
-	while(*(str+len)!='\0') ++len;
-	return len;
+unsigned int calculateStringLength(char *string){
+	int length = 0;
+	while(*(string+length)!='\0') ++length;
+	return length;
 }
 
 bool characterIsUpperCase(char inputCharacter)
diff --git a/src/helperFunctions.h b/src/helperFunctions.h
index 40146d1..a650e74 100644
--- a/src/helperFunctions.h
+++ b/src/helperFunctions.h
@@ -13,6 +13,6 @@ unsigned int power(unsigned int, unsigned int);
 bool everyCharacterIsDigit(char *);
 bool isLetterOfAlphabet(char *);
 double balanceToDouble(char *);
-unsigned int calLen();
+unsigned int calculateStringLength(char *);
 bool charIsUpperCase(char );
 #endif