diff --git a/fix-ucptrietest-golden-diff.patch b/fix-ucptrietest-golden-diff.patch
new file mode 100644
index 0000000..1c68140
--- /dev/null
+++ b/fix-ucptrietest-golden-diff.patch
@@ -0,0 +1,43 @@
+From 698efda42bb21a9da1c92348d3e73466c8a528fe Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Lal?= <kapouer@melix.org>
+Date: Wed, 3 Nov 2021 02:31:18 +0100
+Subject: [PATCH] ICU-21793 Fix ucptrietest golden diff
+References: https://bugzilla.opensuse.org/show_bug.cgi?id=1192935
+
+---
+ icu4c/source/tools/toolutil/toolutil.cpp | 13 +++++++------
+ 1 file changed, 7 insertions(+), 6 deletions(-)
+
+diff --git a/icu4c/source/tools/toolutil/toolutil.cpp b/icu4c/source/tools/toolutil/toolutil.cpp
+index 1fc68aa69c..a9dc37377a 100644
+--- icu4c/source/tools/toolutil/toolutil.cpp
++++ icu4c/source/tools/toolutil/toolutil.cpp
+@@ -228,18 +228,19 @@ uprv_compareGoldenFiles(
+     std::ifstream ifs(goldenFilePath, std::ifstream::in);
+     int32_t pos = 0;
+     char c;
+-    while ((c = ifs.get()) != std::char_traits<char>::eof() && pos < bufferLen) {
++    while (ifs.get(c) && pos < bufferLen) {
+         if (c != buffer[pos]) {
+             // Files differ at this position
+-            return pos;
++            break;
+         }
+         pos++;
+     }
+-    if (pos < bufferLen || c != std::char_traits<char>::eof()) {
+-        // Files are different lengths
+-        return pos;
++    if (pos == bufferLen && ifs.eof()) {
++        // Files are same lengths
++        pos = -1;
+     }
+-    return -1;
++    ifs.close();
++    return pos;
+ }
+ 
+ /*U_CAPI UDate U_EXPORT2
+-- 
+2.34.0
+
diff --git a/icu.changes b/icu.changes
index c897136..39c9e3e 100644
--- a/icu.changes
+++ b/icu.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Nov 22 10:22:02 UTC 2021 - Andreas Schwab <schwab@suse.de>
+
+- Add fix-ucptrietest-golden-diff.patch: ICU-21793 Fix
+  ucptrietest golden diff [boo#1192935]
+
 -------------------------------------------------------------------
 Tue Nov  9 15:39:14 UTC 2021 - Callum Farmer <gmbr3@opensuse.org>
 
diff --git a/icu.spec b/icu.spec
index 268a29c..8e6a463 100644
--- a/icu.spec
+++ b/icu.spec
@@ -45,6 +45,7 @@ Patch6:         icu-error-reporting.diff
 Patch7:         icu-avoid-x87-excess-precision.diff
 Patch8:         locale.diff
 Patch9:         nan-undefined-conversion.patch
+Patch10:        fix-ucptrietest-golden-diff.patch
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 BuildRequires:  pkg-config