diff --git a/src/Base/Rotation.cpp b/src/Base/Rotation.cpp
index 079f54b061..1d3f1d92fd 100644
--- a/src/Base/Rotation.cpp
+++ b/src/Base/Rotation.cpp
@@ -341,6 +341,7 @@ Rotation Rotation::inverse() const
     rot._axis[0] = -this->_axis[0];
     rot._axis[1] = -this->_axis[1];
     rot._axis[2] = -this->_axis[2];
+    rot._angle = this->_angle;
     return rot;
 }