diff --git a/panda/src/dxgsg8/Sources.pp b/panda/src/dxgsg8/Sources.pp
index 58b35138c5..0ae612ec6a 100644
--- a/panda/src/dxgsg8/Sources.pp
+++ b/panda/src/dxgsg8/Sources.pp
@@ -1,4 +1,4 @@
-#define BUILD_DIRECTORY $[HAVE_DX]
+#define BUILD_DIRECTORY $[HAVE_DX8]
 
 #define OTHER_LIBS \
    interrogatedb:c dconfig:c dtoolconfig:m \