diff --git a/src/multiplication.c b/src/multiplication.c
index a1d059f..cf3b14c 100644
--- a/src/multiplication.c
+++ b/src/multiplication.c
@@ -5,8 +5,8 @@
 
 
 
-double multi( double ein1, double ein2) {
-    return (ein1 * ein2);
+double multi( double num1, double num2) {
+    return (num1 * num2);
 }
 
 double square(double x) {
diff --git a/src/multiplication.h b/src/multiplication.h
index f8ba2d6..88ade48 100644
--- a/src/multiplication.h
+++ b/src/multiplication.h
@@ -1,6 +1,6 @@
 #ifndef MULTIPLICATION_H
 #define MULTIPLICATION_H
-extern double multi(double ein1, double ein2);
+extern double multi(double num1, double num2);
 double square(double x);
 int multi_three_integers(int a, int b, int c);
 int multi_left_shift(int a, int b);