diff --git a/src/openalpr/detection/detectorcuda.cpp b/src/openalpr/detection/detectorcuda.cpp
index d5c980e..65615c4 100644
--- a/src/openalpr/detection/detectorcuda.cpp
+++ b/src/openalpr/detection/detectorcuda.cpp
@@ -20,10 +20,11 @@
 #include "detectorcuda.h"
 
 
+#ifdef COMPILE_GPU
+
 using namespace cv;
 using namespace std;
 
-#ifdef COMPILE_GPU
 
 namespace alpr
 {