diff --git a/src/utils/sorted_insert.rs b/src/utils/sorted_insert.rs
index 30bd394..44adb61 100644
--- a/src/utils/sorted_insert.rs
+++ b/src/utils/sorted_insert.rs
@@ -16,7 +16,7 @@ pub fn sorted_insert<T: Clone>(
 
     if items.len() > max_size {
         return Err(Error::Incorrect(
-            "items_size has to greater than max_size".to_string(),
+            "items_size has to lesser than max_size".to_string(),
         ));
     }
 
@@ -58,11 +58,11 @@ mod tests {
     }
 
     #[test]
-    #[should_panic(expected = "items_size has to greater than max_size")]
+    #[should_panic(expected = "items_size has to lesser than max_size")]
     fn test_length_greater_than_max_size() {
         let mut arr = vec![1, 2];
         let _w = sorted_insert(&mut arr, 1, 1, cmp).unwrap();
-        assert!(_w.is_none(), "items_size has to greater than max_size");
+        assert!(_w.is_none(), "items_size has to lesser than max_size");
     }
 
     #[test]
diff --git a/src/utils/sqrt.rs b/src/utils/sqrt.rs
index 6e120f0..069b66c 100644
--- a/src/utils/sqrt.rs
+++ b/src/utils/sqrt.rs
@@ -10,9 +10,7 @@ use crate::prelude::*;
 ///
 pub fn sqrt(value: &BigInt) -> Result<BigInt, Error> {
     if !value >= Zero::zero() {
-        return Err(Error::Incorrect(
-            "value has to be greater than -1".to_string(),
-        ));
+        return Err(Error::Incorrect("value cannot be negative".to_string()));
     }
 
     // If the value is less than or equal to MAX_SAFE_INTEGER,