diff --git a/panda/src/dxgsg9/Sources.pp b/panda/src/dxgsg9/Sources.pp
index 90114851ec..b1fe8138bb 100755
--- a/panda/src/dxgsg9/Sources.pp
+++ b/panda/src/dxgsg9/Sources.pp
@@ -1,4 +1,4 @@
-#define BUILD_DIRECTORY $[HAVE_DX]
+#define BUILD_DIRECTORY $[HAVE_DX9]
 
 #define OTHER_LIBS \
    interrogatedb:c dconfig:c dtoolconfig:m \