diff --git a/satella/instrumentation/memory/get_object_size.py b/satella/instrumentation/memory/get_object_size.py
index fae6a17950ac91cded03c2ca9731ad5fa669cd06..63ed7a7fca61302a9d39c28c1c2179b71eacd7b3 100644
--- a/satella/instrumentation/memory/get_object_size.py
+++ b/satella/instrumentation/memory/get_object_size.py
@@ -9,8 +9,12 @@ def get_size(obj, seen=None) -> int:
 
     :param obj: object to measure
     :return: size in bytes of the object and all of it's subcomponents
+    :raises RuntimeError: when ran on PyPy
     """
-    size = sys.getsizeof(obj)
+    try:
+        size = sys.getsizeof(obj)
+    except TypeError:
+        raise RuntimeError('Running on PyPy?')
     if seen is None:
         seen = set()
     obj_id = id(obj)
diff --git a/tests/test_instrumentation/test_memory.py b/tests/test_instrumentation/test_memory.py
index 3b73a9a81127810afb1500e64b915e394276ba41..7fa6daeba96737fcec1bc0c86368c46680f3a279 100644
--- a/tests/test_instrumentation/test_memory.py
+++ b/tests/test_instrumentation/test_memory.py
@@ -1,5 +1,6 @@
 import logging
 import os
+import platform
 import signal
 import sys
 
@@ -27,10 +28,16 @@ class TestMemory(unittest.TestCase):
         install_dump_frames_on(signal.SIGUSR1)
         os.kill(os.getpid(), signal.SIGUSR1)
 
+    @unittest.skipIf(platform.python_implementation() == 'PyPy', 'does not work on PyPy')
     def test_get_size(self):
         a = 'a' * 1024
         self.assertGreaterEqual(get_size(a), 1024)
 
+    @unittest.skipIf(platform.python_implementation() != 'PyPy', 'requires PyPy')
+    def test_get_size_runtime_error(self):
+        a = 'a' * 1024
+        self.assertRaises(RuntimeError, lambda: get_size(a))
+
     def test_dump_memory(self):
         dump_memory_on()