diff --git a/corelib/include/rtabmap/core/stereo/stereoRectifyFisheye.h b/corelib/include/rtabmap/core/stereo/stereoRectifyFisheye.h
index b67ed824..f96f7c95 100644
--- a/corelib/include/rtabmap/core/stereo/stereoRectifyFisheye.h
+++ b/corelib/include/rtabmap/core/stereo/stereoRectifyFisheye.h
@@ -37,10 +37,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <opencv2/calib3d/calib3d_c.h>
 
 #if CV_MAJOR_VERSION >= 4
-
-#if CV_MINOR_VERSION >= 3
 #include <opencv2/core/core_c.h>
-#endif
 
 // Opencv4 doesn't expose those functions below anymore, we should recopy all of them!
 int cvRodrigues2( const CvMat* src, CvMat* dst, CvMat* jacobian CV_DEFAULT(0))