diff --git a/src/elog.cpp b/src/elog.cpp
index 9f937c3..116691e 100644
--- a/src/elog.cpp
+++ b/src/elog.cpp
@@ -22,7 +22,7 @@
 namespace monitoring
 {
 
-void ElogBase::operator()()
+void ElogBase::operator()(Context ctx)
 {
     log();
 }