diff --git a/src/exception.jl b/src/exception.jl
index 646232ee..a5a465b0 100644
--- a/src/exception.jl
+++ b/src/exception.jl
@@ -180,9 +180,9 @@ function pyraise(e::PyError, ::Vector = [])
     ccall((@pysym :PyErr_Restore), Cvoid, (PyPtr, PyPtr, PyPtr),
           e.T, e.val, e.traceback)
     # refs were stolen
-    setfield!(e.T, :o, C_NULL)
-    setfield!(e.val, :o, C_NULL)
-    setfield!(e.traceback, :o, C_NULL)
+    setfield!(e.T, :o, PyPtr_NULL)
+    setfield!(e.val, :o, PyPtr_NULL)
+    setfield!(e.traceback, :o, PyPtr_NULL)
 end
 
 """