diff --git a/src/sound/music_midi_timidity.cpp b/src/sound/music_midi_timidity.cpp
index 4acda49b9..38ba8557e 100644
--- a/src/sound/music_midi_timidity.cpp
+++ b/src/sound/music_midi_timidity.cpp
@@ -433,7 +433,7 @@ bool TimidityPPMIDIDevice::LaunchTimidity ()
 	}
 	
 	int forkres;
-	wordexp_t words;
+	wordexp_t words = {};
 
 	switch (wordexp (CommandLine.GetChars(), &words, 0))
 	{