diff --git a/SOURCES/lensfun-0.3.2-HTML_TIMESTAMP_NO.patch b/SOURCES/lensfun-0.3.2-HTML_TIMESTAMP_NO.patch
new file mode 100644
index 0000000..fd2d021
--- /dev/null
+++ b/SOURCES/lensfun-0.3.2-HTML_TIMESTAMP_NO.patch
@@ -0,0 +1,13 @@
+diff --git a/docs/doxyfile.in.cmake b/docs/doxyfile.in.cmake
+index 235484b..c8791b9 100644
+--- a/docs/doxyfile.in.cmake
++++ b/docs/doxyfile.in.cmake
+@@ -958,7 +958,7 @@ HTML_COLORSTYLE_GAMMA  = 80
+ # page will contain the date and time when the page was generated. Setting
+ # this to NO can help when comparing the output of multiple runs.
+ 
+-HTML_TIMESTAMP         = YES
++HTML_TIMESTAMP         = NO
+ 
+ # If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+ # documentation will contain sections that can be hidden and shown after the
diff --git a/SPECS/lensfun.spec b/SPECS/lensfun.spec
index 0595d7e..93357c0 100644
--- a/SPECS/lensfun.spec
+++ b/SPECS/lensfun.spec
@@ -9,7 +9,7 @@
 Name:    lensfun
 Version: 0.3.2
 Summary: Library to rectify defects introduced by photographic lenses
-Release: 14%{?dist}
+Release: 15%{?dist}
 
 License: LGPLv3 and CC-BY-SA
 URL: http://lensfun.sourceforge.net/
@@ -29,6 +29,7 @@ Patch866: 0866-Pull-isnan-into-std-namespace-include-cmath-not-math.patch
 ## upstreamable patches
 # install manpages only when INSTALL_HELPER_SCRIPTS=ON
 Patch200: lensfun-0.3.2-INSTALL_HELPER_SCRIPTS.patch
+Patch201: lensfun-0.3.2-HTML_TIMESTAMP_NO.patch
 
 BuildRequires: cmake >= 2.8
 BuildRequires: doxygen
@@ -39,7 +40,7 @@ BuildRequires: pkgconfig(zlib)
 BuildRequires: %{python3} %{python3}-devel
 %else
 Obsoletes: lensfun-python3 < %{version}-%{release}
-#Obsoletes: lensfun-python34 < %{version}-%{release}
+#Obsoletes: lensfun-python34 < %%{version}-%%{release}
 Obsoletes: lensfun-tools < %{version}-%{release}
 %endif
 # for rst2man, if INSTALL_HELPER_SCRIPTS != OFF
@@ -93,6 +94,7 @@ Requires: %{name}%{?_isa} = %{version}-%{release}
 %patch866 -p1 -b .0866
 
 %patch200 -p1 -b .INSTALL_HELPER_SCRIPTS
+%patch201 -p1 -b .HTML_TIMESTAMP_NO
 
 %if 0%{?python3:1}
 sed -i.shbang \
@@ -172,6 +174,10 @@ popd
 
 
 %changelog
+* Thu Jan 14 2021 Jiri Kucera <jkucera@redhat.com> - 0.3.2-15
+- Fix undeclared file conflicts
+  Resolves: #1853149
+
 * Sun Jul 22 2018 Charalampos Stratakis <cstratak@redhat.com> - 0.3.2-14
 - Change build dependency to python3-docutils