diff --git a/passes/memory/memory_share.cc b/passes/memory/memory_share.cc
index f298169de..bcb7433a2 100644
--- a/passes/memory/memory_share.cc
+++ b/passes/memory/memory_share.cc
@@ -619,6 +619,12 @@ struct MemoryShareWorker
 
 			RTLIL::SigBit this_en_active = module->ReduceOr(NEW_ID, this_en);
 
+			if (GetSize(last_addr) < GetSize(this_addr))
+				last_addr.extend_u0(GetSize(this_addr));
+			else
+				this_addr.extend_u0(GetSize(last_addr));
+
+			wr_ports[i]->setParam("\\ABITS", GetSize(this_addr));
 			wr_ports[i]->setPort("\\ADDR", module->Mux(NEW_ID, last_addr, this_addr, this_en_active));
 			wr_ports[i]->setPort("\\DATA", module->Mux(NEW_ID, last_data, this_data, this_en_active));