diff --git a/jambo/exceptions/internal_assertion_exception.py b/jambo/exceptions/internal_assertion_exception.py
index ce3338d..836394d 100644
--- a/jambo/exceptions/internal_assertion_exception.py
+++ b/jambo/exceptions/internal_assertion_exception.py
@@ -1,4 +1,4 @@
-class InternalAssertionException(AssertionError):
+class InternalAssertionException(RuntimeError):
     """Exception raised for internal assertions."""
 
     def __init__(
diff --git a/tests/exceptions/test_internal_assertion_exception.py b/tests/exceptions/test_internal_assertion_exception.py
index 4a6d4de..7b0ba86 100644
--- a/tests/exceptions/test_internal_assertion_exception.py
+++ b/tests/exceptions/test_internal_assertion_exception.py
@@ -5,7 +5,7 @@ from unittest import TestCase
 
 class TestInternalAssertionException(TestCase):
     def test_inheritance(self):
-        self.assertTrue(issubclass(InternalAssertionException, AssertionError))
+        self.assertTrue(issubclass(InternalAssertionException, RuntimeError))
 
     def test_message(self):
         message = "This is an internal assertion error."