diff --git a/debian/patches/0001_opencv34.patch b/debian/patches/0001_opencv34.patch
new file mode 100644
index 0000000..dab2b28
--- /dev/null
+++ b/debian/patches/0001_opencv34.patch
@@ -0,0 +1,29 @@
+Description: Include opencv2/imgproc.hpp for CV_RGB()
+ Since OpenCV-3.4, we need to include opencv2/imgproc.hpp for CV_RGB()
+Author: Christoph Willing chris.willing@linux.com
+Origin: upstream
+Applied-Upstream: e1ecb144ca58cb4d68ef326d0ae224025a171fef
+Last-Update: 2019-09-12
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- frei0r.orig/src/filter/facebl0r/facebl0r.cpp
++++ frei0r/src/filter/facebl0r/facebl0r.cpp
+@@ -14,11 +14,17 @@
+  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+  */
+ 
+-
++#include <opencv2/core/version.hpp>
++#define CV_VERSION_NUM (CV_VERSION_MAJOR * 10000 \
++                      + CV_VERSION_MINOR * 100 \
++                      + CV_VERSION_REVISION)
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <opencv/cv.h>
+ #include <opencv/highgui.h>
++#if CV_VERSION_NUM > 30401
++# include <opencv2/imgproc.hpp>
++#endif
+ 
+ #include <frei0r.hpp>
+ #include <frei0r_math.h>
diff --git a/debian/patches/series b/debian/patches/series
new file mode 100644
index 0000000..6bd8b13
--- /dev/null
+++ b/debian/patches/series
@@ -0,0 +1 @@
+0001_opencv34.patch