diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b0c269..0fd0caa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,8 +12,8 @@ find_package(SDL2_ttf CONFIG REQUIRED)
 find_package(CURL REQUIRED)
 
 
-file(GLOB KULLE_SRC src/data/kulle_*_png.cpp)
-file(GLOB KULLE_HEADER src/data/kulle_*_png.hpp)
+file(GLOB KULLE_SOURCES src/data/kulle_*_png.cpp)
+file(GLOB KULLE_HEADERS src/data/kulle_*_png.hpp)
 
 add_executable(hang_man src/main.cpp
         src/Game.cpp
@@ -26,8 +26,8 @@ add_executable(hang_man src/main.cpp
         src/GuessCorrector.hpp
         src/default_font.cpp
         src/default_font.hpp
-        ${KULLE_SRC}
-        ${KULLE_HEADER}
+        ${KULLE_SOURCES}
+        ${KULLE_HEADERS}
         src/data/hills.cpp
         src/data/hills.hpp
 )