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-rw-r--r--src/send.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/send.c b/src/send.c
index 3726335..624716f 100644
--- a/src/send.c
+++ b/src/send.c
@@ -45,7 +45,7 @@
/**
* Number of samples per tone.
*/
-#define N SAMPLE_RATE / 1000 * DURATION
+#define N (SAMPLE_RATE / 1000 * DURATION)