diff --git a/src/libslic3r/Geometry.cpp b/src/libslic3r/Geometry.cpp
index ba9c7b00e..fc5b158c7 100644
--- a/src/libslic3r/Geometry.cpp
+++ b/src/libslic3r/Geometry.cpp
@@ -1194,7 +1194,7 @@ Vec3d extract_euler_angles(const Eigen::Matrix<double, 3, 3, Eigen::DontAlign>&
     }
     else
     {
-        angles(1) = 0.0;
+        angles(0) = 0.0;
         angles(1) = ::atan2(-rotation_matrix(2, 0), sy);
         angles(2) = (angles(1) >-0.0) ? ::atan2(rotation_matrix(1, 2), rotation_matrix(1, 1)) : ::atan2(-rotation_matrix(1, 2), rotation_matrix(1, 1));
     }