diff --git a/NEWS.rst b/NEWS.rst
index 521485b9..83f07bb3 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -5,6 +5,7 @@ Version History
 ---------------------------
 
 * Fixed memory leak in ``ZstdCompressor.copy_stream()`` (#40).
+* Fixed memory leak in ``ZstdDecompressor.copy_stream()`` (#35).
 
 0.8.1 (released 2017-04-08)
 ---------------------------
diff --git a/c-ext/decompressor.c b/c-ext/decompressor.c
index c3dc2922..4ad8a028 100644
--- a/c-ext/decompressor.c
+++ b/c-ext/decompressor.c
@@ -166,7 +166,7 @@ static PyObject* Decompressor_copy_stream(ZstdDecompressor* self, PyObject* args
 	Py_ssize_t totalWrite = 0;
 	char* readBuffer;
 	Py_ssize_t readSize;
-	PyObject* readResult;
+	PyObject* readResult = NULL;
 	PyObject* res = NULL;
 	size_t zresult = 0;
 	PyObject* writeResult;
@@ -252,6 +252,8 @@ static PyObject* Decompressor_copy_stream(ZstdDecompressor* self, PyObject* args
 				output.pos = 0;
 			}
 		}
+
+		Py_CLEAR(readResult);
 	}
 
 	/* Source stream is exhausted. Finish up. */
@@ -267,6 +269,8 @@ static PyObject* Decompressor_copy_stream(ZstdDecompressor* self, PyObject* args
 		PyMem_Free(output.dst);
 	}
 
+	Py_XDECREF(readResult);
+
 	return res;
 }