diff --git a/src/mem/ruby/system/DMASequencer.cc b/src/mem/ruby/system/DMASequencer.cc
index 9ffd28cec..58714ab10 100644
--- a/src/mem/ruby/system/DMASequencer.cc
+++ b/src/mem/ruby/system/DMASequencer.cc
@@ -191,7 +191,7 @@ DMASequencer::dataCallback(const DataBlock & dblk, const Addr& address)
 void
 DMASequencer::ackCallback(const Addr& address)
 {
-    assert(m_RequestTable.find(addres) != m_RequestTable.end());
+    assert(m_RequestTable.find(address) != m_RequestTable.end());
     issueNext(address);
 }