1 files changed, 2 insertions, 0 deletions
diff --git a/src/lowpass.c b/src/lowpass.c
index ccb41dd..0ec53be 100644
--- a/src/lowpass.c
+++ b/src/lowpass.c
@@ -181,6 +181,8 @@ signed char lpf_init()
 
 void lpf_close()
 {
+  if (iir.coef)
+    free(iir.coef);
 }