diff --git a/config.w32 b/config.w32
index 69a05c2..b4c4a03 100644
--- a/config.w32
+++ b/config.w32
@@ -9,7 +9,7 @@ if (PHP_OPENCV != "no") {
 
 	EXTENSION("opencv", "opencv.cpp");
 
-	if (PHP_OPENCV != "no") {
+	if (PHP_OPENCV_D != "no") {
     	AC_DEFINE("OPENCV_DEBUG", 1, "OPENCV_DEBUG Setting");
     }