diff --git a/src/Expectation.php b/src/Expectation.php
index 0df76ac2..aebbdd68 100644
--- a/src/Expectation.php
+++ b/src/Expectation.php
@@ -593,7 +593,7 @@ final class Expectation
     }
 
     /**
-     * Asserts that the given expectation target to have the given suffix.
+     * Asserts that the given expectation target to have the given prefix.
      */
     public function toHavePrefix(string $prefix): ArchExpectation
     {
diff --git a/src/Expectations/OppositeExpectation.php b/src/Expectations/OppositeExpectation.php
index 55261be8..e857009d 100644
--- a/src/Expectations/OppositeExpectation.php
+++ b/src/Expectations/OppositeExpectation.php
@@ -289,7 +289,7 @@ final class OppositeExpectation
     }
 
     /**
-     * Not supported.
+     * Asserts that the given expectation target to not have the given prefix.
      */
     public function toHavePrefix(string $prefix): ArchExpectation
     {
@@ -302,7 +302,7 @@ final class OppositeExpectation
     }
 
     /**
-     * Not supported.
+     * Asserts that the given expectation target to not have the given suffix.
      */
     public function toHaveSuffix(string $suffix): ArchExpectation
     {