diff --git a/src/maths.rs b/src/maths.rs
index 2d7aee8..9460014 100644
--- a/src/maths.rs
+++ b/src/maths.rs
@@ -169,6 +169,7 @@ impl ops::Mul<GaussianRational> for GaussianRational {
     type Output = GaussianRational;
 
     fn mul(self, rhs: GaussianRational) -> GaussianRational {
-        GaussianRational::new(self.real * rhs.real - self.imaginary * self.imaginary, self.real * rhs.imaginary + self.imaginary * rhs.real)
+        GaussianRational::new(self.real * rhs.real - self.imaginary * rhs.imaginary, self.real * rhs.imaginary + self.imaginary * rhs.real)
+    }
     }
 }