diff --git a/tja2fumen/converters.py b/tja2fumen/converters.py
index d4f9928..0fc0243 100644
--- a/tja2fumen/converters.py
+++ b/tja2fumen/converters.py
@@ -101,6 +101,7 @@ def convertTJAToFumen(fumen, tja):
     # Hardcode currentBranch due to current lack of support for branching songs
     currentBranch = 'normal'  # TODO: Program in branch support
     tja['measures'] = preprocessTJAMeasures(tja)
+    measureDurationPrev = 0
     currentDrumroll = None
     total_notes = 0