1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 491abe6..1954a13 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -4958,7 +4958,7 @@ typedef struct NRE_callback {
 #define TCLNR_FREE(interp, ptr)  TclSmallFreeEx((interp), (ptr))
 #else
 #define TCLNR_ALLOC(interp, ptr) \
-    (ptr = ((ClientData) ckalloc(sizeof(NRE_callback))))
+    ((ptr) = ((void *)ckalloc(sizeof(NRE_callback))))
 #define TCLNR_FREE(interp, ptr)  ckfree((char *) (ptr))
 #endif