diff --git a/corelib/include/rtabmap/core/SensorData.h b/corelib/include/rtabmap/core/SensorData.h
index 25aba5a0..2e1f77dc 100644
--- a/corelib/include/rtabmap/core/SensorData.h
+++ b/corelib/include/rtabmap/core/SensorData.h
@@ -38,7 +38,7 @@ namespace rtabmap
 /**
  * An id is automatically generated if id=0.
  */
-class SensorData
+class RTABMAP_EXP SensorData
 {
 public:
 	SensorData(); // empty constructor