diff --git a/src/rogauracore.c b/src/rogauracore.c
index 80a20f3..e81c470 100644
--- a/src/rogauracore.c
+++ b/src/rogauracore.c
@@ -98,9 +98,6 @@ typedef struct {
     ScalarDef scalars[MAX_NUM_SCALARS];
 } FunctionRecord;
 
-const ScalarDef SPEED = { "SPEED", "speed", 1, 3 };
-const ScalarDef BRIGHTNESS = { "BRIGHTNESS", "brightness", 0, 3 };
-
 // ------------------------------------------------------------
 //  USB protocol for RGB keyboard
 // ------------------------------------------------------------
@@ -273,6 +270,9 @@ rainbow(Arguments *args, Messages *messages) {
 //  Command line argument parsing
 // ------------------------------------------------------------
 
+#define SPEED { "SPEED", "speed", 1, 3 }
+#define BRIGHTNESS { "BRIGHTNESS", "brightness", 0, 3 }
+
 const FunctionRecord FUNCTION_RECORDS[] = {
     {"single_static", &single_static, 1, 0},
     {"single_breathing", &single_breathing, 2, 1, {SPEED}},