diff --git a/RT_5.8_fix_canon_sraw.patch b/RT_5.8_fix_canon_sraw.patch
new file mode 100644
index 0000000..285bfef
--- /dev/null
+++ b/RT_5.8_fix_canon_sraw.patch
@@ -0,0 +1,22 @@
+From 4221fdf31e43658cef98ad660ad398b8ae81b8d7 Mon Sep 17 00:00:00 2001
+From: Ingo Weyrich <heckflosse67@gmx.de>
+Date: Fri, 7 Feb 2020 13:52:25 +0100
+Subject: [PATCH] fix regression in Canon sRAW/mRAW black level computation,
+ taken from ART, fixes #5638
+
+---
+ rtengine/dcraw.cc | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/rtengine/dcraw.cc b/rtengine/dcraw.cc
+index 812f122b3..0284b3f1d 100644
+--- a/rtengine/dcraw.cc
++++ b/rtengine/dcraw.cc
+@@ -9868,6 +9868,7 @@ void CLASS identify()
+     filters = 0;
+     tiff_samples = colors = 3;
+     load_raw = &CLASS canon_sraw_load_raw;
++    FORC4 cblack[c] = 0; // ALB
+   } else if (!strcmp(model,"PowerShot 600")) {
+     height = 613;
+     width  = 854;
diff --git a/rawtherapee.spec b/rawtherapee.spec
index 9cbb6a9..b5dc621 100644
--- a/rawtherapee.spec
+++ b/rawtherapee.spec
@@ -11,14 +11,18 @@ Source0:        https://github.com/Beep6581/RawTherapee/releases/download/%{vers
 
 # Fix linking against system's KLT
 # Upstream PR https://github.com/Beep6581/RawTherapee/pull/5539
-Patch0:         RT_5.8_system_klt.patch
+Patch:         RT_5.8_system_klt.patch
 
 # Backport patch for fixing rhbz#1820907
-Patch1:         RT_5.8_fix_crop.patch
+Patch:         RT_5.8_fix_crop.patch
 
 # Backport patch for fixing build with glibc 2.34
 # https://github.com/Beep6581/RawTherapee/issues/6324
-Patch2:         RT_5.8_glibc234.patch
+Patch:         RT_5.8_glibc234.patch
+
+# Backport patch for fixing Canon sRAW/mRAW
+# https://github.com/Beep6581/RawTherapee/issues/5898
+Patch:         RT_5.8_fix_canon_sraw.patch
 
 
 BuildRequires:  cmake
@@ -115,4 +119,4 @@ appstream-util validate-relax --nonet %{buildroot}/%{_datadir}/metainfo/com.%{na
 
 
 %changelog
-%autochangelog
\ No newline at end of file
+%autochangelog