diff --git a/src/Sequence.cpp b/src/Sequence.cpp
index ec955f1d7..d9c19c189 100644
--- a/src/Sequence.cpp
+++ b/src/Sequence.cpp
@@ -1123,7 +1123,7 @@ bool Sequence::Read(samplePtr buffer, sampleFormat format,
 
    if (result != len)
    {
-      wxLogWarning(wxT("Expected to read %d samples, got %d samples."), len, result);
+      wxLogWarning(wxT("Expected to read %ld samples, got %d samples."), len, result);
       if (result < 0)
          result = 0;
       ClearSamples(buffer, format, result, len-result);