diff --git a/c/include/brotli/port.h b/c/include/brotli/port.h
index 20dc231..0704f3a 100644
--- a/c/include/brotli/port.h
+++ b/c/include/brotli/port.h
@@ -266,9 +266,9 @@
 #define BROTLI_ENC_API BROTLI_PUBLIC
 #endif  /* _WIN32 */
 #else  /* BROTLI_SHARED_COMPILATION */
-#define BROTLI_COMMON_API
-#define BROTLI_DEC_API
-#define BROTLI_ENC_API
+#define BROTLI_COMMON_API BROTLI_PUBLIC
+#define BROTLI_DEC_API BROTLI_PUBLIC
+#define BROTLI_ENC_API BROTLI_PUBLIC
 #endif
 
 #endif  /* BROTLI_COMMON_PORT_H_ */