diff --git a/lib/icinga/host.cpp b/lib/icinga/host.cpp
index c9ca6d08e..166593576 100644
--- a/lib/icinga/host.cpp
+++ b/lib/icinga/host.cpp
@@ -267,7 +267,7 @@ bool Host::ResolveMacro(const String& macro, const CheckResult::Ptr&, String *re
 
 		String value;
 		if (vars && vars->Contains(macro))
-			value = vars->Get(key);
+			value = vars->Get(macro);
 
 		if (value.IsEmpty()) {
 			*result = GetName();