diff --git a/rubberband/RubberBandStretcher.h b/rubberband/RubberBandStretcher.h
index 6b883a8..79234f4 100644
--- a/rubberband/RubberBandStretcher.h
+++ b/rubberband/RubberBandStretcher.h
@@ -30,7 +30,9 @@
 
 #undef RUBBERBAND_DLLEXPORT
 #ifdef _MSC_VER
+#ifndef RUBBERBAND_STATIC
 #define RUBBERBAND_DLLEXPORT __declspec(dllexport)
+#endif
 #else
 #define RUBBERBAND_DLLEXPORT
 #endif
diff --git a/rubberband/rubberband-c.h b/rubberband/rubberband-c.h
index 73d1216..3967482 100644
--- a/rubberband/rubberband-c.h
+++ b/rubberband/rubberband-c.h
@@ -35,7 +35,9 @@ extern "C" {
 
 #undef RB_EXTERN
 #ifdef _MSC_VER
+#ifndef RUBBERBAND_STATIC
 #define RB_EXTERN extern __declspec(dllexport)
+#endif
 #else
 #define RB_EXTERN extern
 #endif