diff --git a/tests/array_operations.rs b/tests/array_operations.rs
index 1ed3e23..6ccd3ae 100644
--- a/tests/array_operations.rs
+++ b/tests/array_operations.rs
@@ -562,5 +562,5 @@ fn test_integer_array() {
 
 mat_mul_test_impl!(f64, 1E-14);
 mat_mul_test_impl!(f32, 1E-5);
-mat_mul_test_impl!(c32, 1E-5);
+mat_mul_test_impl!(c32, 1E-4);
 mat_mul_test_impl!(c64, 1E-12);