diff --git a/fixed_wide/src/tests.rs b/fixed_wide/src/tests.rs
index 447545a..811714c 100644
--- a/fixed_wide/src/tests.rs
+++ b/fixed_wide/src/tests.rs
@@ -18,3 +18,9 @@ fn test_sqrt(){
 	let a=crate::types::I32F32::ONE*4;
 	assert_eq!(a.sqrt(),crate::types::I32F32::from(2));
 }
+#[test]
+fn test_sqrt_low(){
+	let a=crate::types::I32F32::HALF;
+	let b=a*a;
+	assert_eq!(b.sqrt(),a);
+}