diff --git a/hal/module.go b/hal/module.go
index 8f33a12..86c84d9 100644
--- a/hal/module.go
+++ b/hal/module.go
@@ -28,7 +28,7 @@ func (h *Module) debug(format string, args ...interface{}) {
 	if !h.debugEnabled {
 		return
 	}
-	fmt.Printf("[DEBUG] "+format, args...)
+	fmt.Printf("[DEBUG] "+format+"\n", args...)
 }
 
 func (h *Module) Step() {
@@ -38,9 +38,9 @@ func (h *Module) Step() {
 		return
 	}
 	h.debug("Instruction: %s", instruction.Instruction.Name)
-	h.debug("Accumulator before: %d", h.accumulator)
+	h.debug("Accumulator before: %f", h.accumulator)
 	instruction.Execute(h)
-	h.debug("Accumulator after: %d", h.accumulator)
+	h.debug("Accumulator after: %f", h.accumulator)
 }
 
 func (h *Module) Run() error {