diff --git a/frontends/CMakeLists.txt b/frontends/CMakeLists.txt
index 9858b61..b151cc3 100644
--- a/frontends/CMakeLists.txt
+++ b/frontends/CMakeLists.txt
@@ -1,3 +1,5 @@
+if (BUILD_TOOLS)
 ADD_SUBDIRECTORY(yasm)
 ADD_SUBDIRECTORY(tasm)
 ADD_SUBDIRECTORY(vsyasm)
+endif()