diff --git a/src/sampled_values/sv_publisher.h b/src/sampled_values/sv_publisher.h
index 5c7fcebc..dae01d27 100644
--- a/src/sampled_values/sv_publisher.h
+++ b/src/sampled_values/sv_publisher.h
@@ -311,7 +311,7 @@ SVPublisher_ASDU_setSmpCntWrap(SVPublisher_ASDU self, uint16_t value);
  *
  * \param[in] self the Sampled Values ASDU instance.
  */
-void
+LIB61850_API void
 SVPublisher_ASDU_enableRefrTm(SVPublisher_ASDU self);
 
 /**
@@ -364,7 +364,7 @@ SVPublisher_ASDU_setSmpRate(SVPublisher_ASDU self, uint16_t smpRate);
  * \param[in] self the Sampled Values ASDU instance.
  * \param[in] smpSynch the clock synchronization state
  */
-void
+LIB61850_API void
 SVPublisher_ASDU_setSmpSynch(SVPublisher_ASDU self, uint16_t smpSynch);
 
 /**@} @}*/