diff --git a/tools/lli/ChildTarget/Makefile b/tools/lli/ChildTarget/Makefile
index f77b144aabf..eff49c9f1cf 100644
--- a/tools/lli/ChildTarget/Makefile
+++ b/tools/lli/ChildTarget/Makefile
@@ -14,4 +14,6 @@ include $(LEVEL)/Makefile.config
 
 LINK_COMPONENTS :=
 
+SOURCES += ../RemoteTarget.cpp
+
 include $(LLVM_SRC_ROOT)/Makefile.rules