diff --git a/src/helperFunctions.c b/src/helperFunctions.c
index 2fd5249..71c6a63 100644
--- a/src/helperFunctions.c
+++ b/src/helperFunctions.c
@@ -137,8 +137,9 @@ double balanceToDouble(char *balanceAsString)
 	}
 	return sign * result / power;
 }
-bool charIsUp(char c)
+
+bool characterIsUpperCase(char inputCharacter)
 {
-	bool result = (c>='A'&&c<='Z') ? true : false;
+	bool result = (inputCharacter>='A'&&inputCharacter<='Z') ? true : false;
 	return result;
 }
diff --git a/src/helperFunctions.h b/src/helperFunctions.h
index ba68d57..64083d5 100644
--- a/src/helperFunctions.h
+++ b/src/helperFunctions.h
@@ -13,5 +13,5 @@ unsigned int power(unsigned int, unsigned int);
 bool everyCharacterIsDigit(char *);
 bool isLetterOfAlphabet(char *);
 double balanceToDouble(char *);
-bool charIsUp(char );
+bool charIsUpperCase(char );
 #endif