diff --git a/rubberband/RubberBandStretcher.h b/rubberband/RubberBandStretcher.h
index 79234f4..b456c1b 100644
--- a/rubberband/RubberBandStretcher.h
+++ b/rubberband/RubberBandStretcher.h
@@ -32,6 +32,8 @@
 #ifdef _MSC_VER
 #ifndef RUBBERBAND_STATIC
 #define RUBBERBAND_DLLEXPORT __declspec(dllexport)
+#else
+#define RUBBERBAND_DLLEXPORT
 #endif
 #else
 #define RUBBERBAND_DLLEXPORT
diff --git a/rubberband/rubberband-c.h b/rubberband/rubberband-c.h
index 3967482..3e700a6 100644
--- a/rubberband/rubberband-c.h
+++ b/rubberband/rubberband-c.h
@@ -37,6 +37,8 @@ extern "C" {
 #ifdef _MSC_VER
 #ifndef RUBBERBAND_STATIC
 #define RB_EXTERN extern __declspec(dllexport)
+#else
+#define RB_EXTERN extern
 #endif
 #else
 #define RB_EXTERN extern