1 files changed, 0 insertions, 1 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index 596ba3f..eb33106 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -1552,7 +1552,6 @@ Tcl_CreateChannel(
     assert(NULL!=typePtr->inputProc);
     assert(NULL!=typePtr->outputProc);
     assert(NULL!=typePtr->watchProc);
-    assert(NULL!=typePtr->truncateProc);
     assert(NULL!=typePtr->getHandleProc);
     if (NULL!=typePtr->wideSeekProc) {
       assert(NULL!=typePtr->seekProc && "Must define seekProc if defining wideSeekProc");