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-rw-r--r--grc/blocks/gr_sub_xx.xml2
1 files changed, 1 insertions, 1 deletions
diff --git a/grc/blocks/gr_sub_xx.xml b/grc/blocks/gr_sub_xx.xml
index f1f4797e0..c677747da 100644
--- a/grc/blocks/gr_sub_xx.xml
+++ b/grc/blocks/gr_sub_xx.xml
@@ -48,7 +48,7 @@
<type>int</type>
</param>
<check>$vlen &gt; 0</check>
- <check>$num_inputs &gt;= 2</check>
+ <check>$num_inputs &gt;= 1</check>
<sink>
<name>in</name>
<type>$type</type>