diff --git a/packages/vm/CMakeLists.txt b/packages/vm/CMakeLists.txt
index 3fef4a6d..decd2b1d 100644
--- a/packages/vm/CMakeLists.txt
+++ b/packages/vm/CMakeLists.txt
@@ -15,7 +15,7 @@ add_executable(vm src/main.cpp)
 target_compile_features(vm PUBLIC cxx_std_23)
 target_link_libraries(vm PRIVATE biu::biu)
 if(VM_CONFIG)
-  target_compile_definitions(vm PRIVATE VM_CONFIG="${VMCONFIG}")
+  target_compile_definitions(vm PRIVATE VM_CONFIG="${VM_CONFIG}")
 endif()
 
 install(TARGETS vm RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})