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-rw-r--r--grc/core/Connection.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/grc/core/Connection.py b/grc/core/Connection.py
index 718dd69e71..f979efb3e4 100644
--- a/grc/core/Connection.py
+++ b/grc/core/Connection.py
@@ -8,7 +8,7 @@ SPDX-License-Identifier: GPL-2.0-or-later
from .base import Element
-from .Constants import ALIAS_OF
+from .Constants import ALIASES_OF
from .utils.descriptors import lazy_property
@@ -93,7 +93,7 @@ class Connection(Element):
source_dtype = self.source_port.dtype
sink_dtype = self.sink_port.dtype
- if source_dtype != sink_dtype and source_dtype != ALIAS_OF.get(sink_dtype):
+ if source_dtype != sink_dtype and source_dtype not in ALIASES_OF.get(sink_dtype):
self.add_error_message('Source IO type "{}" does not match sink IO type "{}".'.format(source_dtype, sink_dtype))
source_size = self.source_port.item_size