diff --git a/stepmania/src/LifeMeterBar.cpp b/stepmania/src/LifeMeterBar.cpp
index e1b99337ea..4d253bb0a8 100644
--- a/stepmania/src/LifeMeterBar.cpp
+++ b/stepmania/src/LifeMeterBar.cpp
@@ -515,7 +515,7 @@ void LifeMeterBar::UpdateNonstopLifebar(const int cleared,
 
 	m_fLifeDifficulty = m_fBaseLifeDifficulty - 0.2f * ProgressiveLifebarDifficulty;
 	if (total > 1)
-		m_fLifeDifficulty *= cleared / (total - 1);
+		m_fLifeDifficulty = m_fLifeDifficulty * cleared / (total - 1);
 
 	if (m_fLifeDifficulty >= 0.4) return;