diff --git a/meson.build b/meson.build
index 99006d0..213084c 100644
--- a/meson.build
+++ b/meson.build
@@ -49,6 +49,7 @@ library_sources = [
   'src/common/Resampler.cpp',
   'src/common/StretchCalculator.cpp',
   'src/common/sysutils.cpp',
+  'src/common/mathmisc.cpp',
   'src/common/Thread.cpp',
   'src/finer/R3Stretcher.cpp', 
 ]
diff --git a/single/RubberBandSingle.cpp b/single/RubberBandSingle.cpp
index 8cdcb14..d2f6138 100644
--- a/single/RubberBandSingle.cpp
+++ b/single/RubberBandSingle.cpp
@@ -73,6 +73,7 @@
 #include "../src/common/Allocators.cpp"
 #include "../src/common/StretchCalculator.cpp"
 #include "../src/common/sysutils.cpp"
+#include "../src/common/mathmisc.cpp"
 #include "../src/common/Thread.cpp"
 #include "../src/faster/StretcherChannelData.cpp"
 #include "../src/faster/R2Stretcher.cpp"