diff --git a/code/renderer/tr_ghost.cpp b/code/renderer/tr_ghost.cpp
index 2b619982..bea96d93 100644
--- a/code/renderer/tr_ghost.cpp
+++ b/code/renderer/tr_ghost.cpp
@@ -24,3 +24,10 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "tr_local.h"
 #include "tr_ghost.h"
+
+void R_UpdateGhostTextures() {
+    int i;
+    int numTextures;
+
+    // FIXME: unimplemented
+}
diff --git a/code/renderer/tr_local.h b/code/renderer/tr_local.h
index 62a061b7..86551126 100644
--- a/code/renderer/tr_local.h
+++ b/code/renderer/tr_local.h
@@ -2220,6 +2220,16 @@ int RE_GetShaderHeight(qhandle_t hShader);
 const char* RE_GetShaderName(qhandle_t hShader);
 const char* RE_GetModelName(qhandle_t hModel);
 
+/*
+=============================================================
+
+GHOST
+
+=============================================================
+*/
+
+void R_UpdateGhostTextures();
+
 /*
 =============================================================
 =============================================================