diff --git a/src/WaveClip.cpp b/src/WaveClip.cpp
index 83d027e02..2df6025f0 100644
--- a/src/WaveClip.cpp
+++ b/src/WaveClip.cpp
@@ -1204,7 +1204,7 @@ void WaveClip::AppendSharedBlock(const std::shared_ptr<SampleBlock> &pBlock)
  -- Some prefix (maybe none) of the buffer is appended,
 and no content already flushed to disk is lost. */
 bool WaveClip::Append(samplePtr buffer, sampleFormat format,
-                      size_t len, unsigned int stride /* = 1 */)
+                      size_t len, unsigned int stride)
 {
    //wxLogDebug(wxT("Append: len=%lli"), (long long) len);
    bool result = false;
diff --git a/src/WaveClip.h b/src/WaveClip.h
index 6eaf54863..4cd1232fd 100644
--- a/src/WaveClip.h
+++ b/src/WaveClip.h
@@ -287,7 +287,7 @@ public:
    /// You must call Flush after the last Append
    /// @return true if at least one complete block was created
    bool Append(samplePtr buffer, sampleFormat format,
-               size_t len, unsigned int stride=1);
+               size_t len, unsigned int stride);
    /// Flush must be called after last Append
    void Flush();