diff --git a/src/isolator/hei_isolator.cpp b/src/isolator/hei_isolator.cpp
index 85995a6..f24cc5d 100644
--- a/src/isolator/hei_isolator.cpp
+++ b/src/isolator/hei_isolator.cpp
@@ -128,7 +128,7 @@
 bool Isolator::performWriteOp(OpRuleName_t i_op, Signature i_sig)
 {
     // Return true on a failure.
-    bool writefail = false;
+    bool writeFail = false;
 
     // Use the signature to determine the relevant isolation node.
     IsolationNode::Key nodeKey = {i_sig.getId(), i_sig.getInstance()};