diff --git a/source/GTA_SA_cheat_finder.cpp b/source/GTA_SA_cheat_finder.cpp
index 6cd0742..9820542 100755
--- a/source/GTA_SA_cheat_finder.cpp
+++ b/source/GTA_SA_cheat_finder.cpp
@@ -149,7 +149,7 @@ void GTA_SA::run()
   std::cout << "" << std::endl;
 }
 
-#if !defined(BUILD_WITH_CUDA)
+#if defined(BUILD_WITH_CUDA)
 void GTA_SA::cuda_runner()
 {
   if ((max_range - min_range) < cuda_block_size) {
diff --git a/source/GTA_SA_cheat_finder.hpp b/source/GTA_SA_cheat_finder.hpp
index dec4edc..86f45f4 100755
--- a/source/GTA_SA_cheat_finder.hpp
+++ b/source/GTA_SA_cheat_finder.hpp
@@ -43,7 +43,7 @@ class GTA_SA
 public:
   GTA_SA();
   void cpu_runner(const std::uint64_t i);
-#if !defined(BUILD_WITH_CUDA)
+#if defined(BUILD_WITH_CUDA)
   void cuda_runner();
 #endif
   void run();