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-rw-r--r--grc/core/blocks/block.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/grc/core/blocks/block.py b/grc/core/blocks/block.py
index 6fd2c6866..5e46cece9 100644
--- a/grc/core/blocks/block.py
+++ b/grc/core/blocks/block.py
@@ -207,6 +207,7 @@ class Block(Element):
def _rewrite_nports(self, ports):
for port in ports:
if hasattr(port, 'master_port'): # Not a master port and no left-over clones
+ port.dtype = port.master_port.dtype
continue
nports = port.multiplicity
for clone in port.clones[nports-1:]: