diff --git a/lldb/source/Target/ObjCLanguageRuntime.cpp b/lldb/source/Target/ObjCLanguageRuntime.cpp
index 106ea07..3084b70e 100644
--- a/lldb/source/Target/ObjCLanguageRuntime.cpp
+++ b/lldb/source/Target/ObjCLanguageRuntime.cpp
@@ -28,6 +28,8 @@
 using namespace lldb;
 using namespace lldb_private;
 
+char ObjCLanguageRuntime::ID = 0;
+
 // Destructor
 ObjCLanguageRuntime::~ObjCLanguageRuntime() {}