diff --git a/cmake/FindGLEW.cmake b/cmake/FindGLEW.cmake
index b451dccc4..1c06e59b0 100644
--- a/cmake/FindGLEW.cmake
+++ b/cmake/FindGLEW.cmake
@@ -9,7 +9,6 @@ if(NOT PREFER_BUNDLED_LIBS)
 endif()
 
 if(NOT GLEW_FOUND)
-  set(GLEW_FOUND ON)
   set(GLEW_BUNDLED ON)
   set(GLEW_SRC_DIR src/engine/external/glew)
   set_glob(GLEW_SRC GLOB ${GLEW_SRC_DIR} glew.c)
diff --git a/cmake/FindZLIB.cmake b/cmake/FindZLIB.cmake
index cd49eabf1..a3b37c7f7 100644
--- a/cmake/FindZLIB.cmake
+++ b/cmake/FindZLIB.cmake
@@ -9,7 +9,6 @@ if(NOT PREFER_BUNDLED_LIBS)
 endif()
 
 if(NOT ZLIB_FOUND)
-  set(ZLIB_FOUND ON)
   set(ZLIB_BUNDLED ON)
   set(ZLIB_SRC_DIR src/engine/external/zlib)
   set_glob(ZLIB_SRC GLOB ${ZLIB_SRC_DIR}