diff --git a/doxygen.spec b/doxygen.spec
index 6ac914a..17c4419 100644
--- a/doxygen.spec
+++ b/doxygen.spec
@@ -8,7 +8,7 @@ Summary: A documentation system for C/C++
 Name:    doxygen
 Epoch:   1
 Version: 1.8.15
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 # No version is specified.
 License: GPL+
@@ -21,6 +21,7 @@ Source2: doxywizard.desktop
 # upstream patches
 Patch0: doxygen-1.8.15-handle_empty_TOC_in_XML_output.patch
 Patch1: doxygen-1.8.15-test_for_XML_output_with_an_empty_TOC.patch
+Patch2: doxygen-1.8.15-inconsistent_whitespace_removal_for_operators.patch
 
 BuildRequires: gcc-c++ gcc
 BuildRequires: perl-interpreter
@@ -184,6 +185,9 @@ make tests -C %{_target_platform}
 %endif
 
 %changelog
+* Fri Feb 08 2019 Than Ngo <than@redhat.com> - 1:1.8.15-4
+- fix bz#673228 - doxgen 1.8.15 operator whitespace changes cause wxpython FTBFS
+
 * Tue Feb 05 2019 Than Ngo <than@redhat.com> - 1:1.8.15-3
 - fixed bz#1671999, backported from upstream
 - added test for XML output with an empty TOC