diff --git a/bzlib.h b/bzlib.h
index e3ba1d6..d3bed44 100644
--- a/bzlib.h
+++ b/bzlib.h
@@ -26,6 +26,8 @@
 extern "C" {
 #endif
 
+#define BZ_IMPORT
+
 #define BZ_RUN               0
 #define BZ_FLUSH             1
 #define BZ_FINISH            2