1 files changed, 2 insertions, 0 deletions
diff --git a/Alc/midi/base.c b/Alc/midi/base.c
index 46d4bd76..f39aaba3 100644
--- a/Alc/midi/base.c
+++ b/Alc/midi/base.c
@@ -429,6 +429,8 @@ void ALsoundfont_Construct(ALsoundfont *self)
     self->Samples = NULL;
     self->NumSamples = 0;
 
+    self->Mapped = AL_FALSE;
+
     self->id = 0;
 }