diff --git a/digikam-5.1.0-libraw_endian.patch b/digikam-5.1.0-libraw_endian.patch
new file mode 100644
index 0000000..ede41cc
--- /dev/null
+++ b/digikam-5.1.0-libraw_endian.patch
@@ -0,0 +1,30 @@
+diff -up digikam-5.1.0/core/libs/rawengine/libraw/libraw/libraw_types.h.libraw_endian digikam-5.1.0/core/libs/rawengine/libraw/libraw/libraw_types.h
+--- digikam-5.1.0/core/libs/rawengine/libraw/libraw/libraw_types.h.libraw_endian	2016-08-08 12:19:25.000000000 -0500
++++ digikam-5.1.0/core/libs/rawengine/libraw/libraw/libraw_types.h	2016-08-09 09:23:01.387824702 -0500
+@@ -612,10 +612,10 @@ typedef struct
+ #elif defined(__INTEL__)
+ #define LibRawBigEndian 0
+ 
+-#elif defined(_M_IX86)
++#elif defined(_M_IX86) || defined(__i386__)
+ #define LibRawBigEndian 0
+ 
+-#elif defined(_M_X64) || defined(__amd64__)
++#elif defined(_M_X64) || defined(__amd64__) || defined(__x86_64__)
+ #define LibRawBigEndian 0
+ 
+ #elif defined(__LITTLE_ENDIAN__)
+@@ -625,6 +625,13 @@ typedef struct
+ #define LibRawBigEndian 1
+ #elif defined(_ARM_)
+ #define LibRawBigEndian 0
++
++#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
++#define LibRawBigEndian 0
++
++#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
++#define LibRawBigEndian 1
++
+ #else
+ #ifndef qXCodeRez
+ #error Unable to figure out byte order.
diff --git a/digikam.spec b/digikam.spec
index f3c9664..9e1f0fd 100644
--- a/digikam.spec
+++ b/digikam.spec
@@ -13,6 +13,8 @@ Source0: http://download.kde.org/%{?beta:un}stable/digikam/digikam-%{version}%{?
 Source10: digikam-import.desktop
 
 ## upstreamable patches
+# https://bugs.kde.org/show_bug.cgi?id=366542
+Patch100: digikam-5.1.0-libraw_endian.patch
 
 ## upstream patches
 
@@ -165,6 +167,8 @@ BuildArch: noarch
 %prep
 %setup -q -n %{name}-%{version}%{?beta:-%{beta}}
 
+%patch100 -p1 .libraw_endian
+
 # try to fix doc-translated mess, see also
 #https://bugs.kde.org/show_bug.cgi?id=365135#c18
 pushd doc-translated/digikam