diff --git a/.gitignore b/.gitignore
index 74b394b..e32a4b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -60,3 +60,6 @@ LibRaw-0.9.1.tar.gz
 /LibRaw-0.18.6.tar.gz
 /LibRaw-demosaic-pack-GPL2-0.18.6.tar.gz
 /LibRaw-demosaic-pack-GPL3-0.18.6.tar.gz
+/LibRaw-0.18.7.tar.gz
+/LibRaw-demosaic-pack-GPL2-0.18.7.tar.gz
+/LibRaw-demosaic-pack-GPL3-0.18.7.tar.gz
diff --git a/LibRaw-0.18.7-ambiguous.patch b/LibRaw-0.18.7-ambiguous.patch
new file mode 100644
index 0000000..4827294
--- /dev/null
+++ b/LibRaw-0.18.7-ambiguous.patch
@@ -0,0 +1,11 @@
+--- internal/dcraw_common.cpp~	2018-01-18 23:57:03.000000000 -0600
++++ internal/dcraw_common.cpp	2018-01-19 11:50:19.746347270 -0600
+@@ -6827,7 +6827,7 @@
+ 		if (table_buf[iLensData+9] &&
+ 			(fabs(imgdata.lens.makernotes.CurFocal) < 0.1f))
+ 		  imgdata.lens.makernotes.CurFocal =
+-			10*(table_buf[iLensData+9]>>2) * powf64(4, (table_buf[iLensData+9] & 0x03)-2);
++			10*(table_buf[iLensData+9]>>2) * powf64((float)4, (table_buf[iLensData+9] & 0x03)-2);
+ 		if (table_buf[iLensData+10] & 0xf0)
+ 		  imgdata.lens.makernotes.MaxAp4CurFocal =
+ 			powf64(2.0f, (float)((table_buf[iLensData+10] & 0xf0) >>4)/4.0f);
diff --git a/LibRaw.spec b/LibRaw.spec
index 1f60c19..f4e7ae5 100644
--- a/LibRaw.spec
+++ b/LibRaw.spec
@@ -1,6 +1,6 @@
 Summary: Library for reading RAW files obtained from digital photo cameras
 Name: LibRaw
-Version: 0.18.6
+Version: 0.18.7
 Release: 1%{?dist}
 License: GPLv3+
 Group: Development/Libraries
@@ -14,6 +14,7 @@ Source1: http://www.libraw.org/data/%{name}-demosaic-pack-GPL2-%{version}.tar.gz
 Source2: http://www.libraw.org/data/%{name}-demosaic-pack-GPL3-%{version}.tar.gz
 Patch0:  LibRaw-0.6.0-pkgconfig.patch
 Patch1:  LibRaw-0.17.1-CVE-2015-8366-8367.patch
+Patch2:  LibRaw-0.18.7-ambiguous.patch
 
 Provides: bundled(dcraw) = 9.25
 
@@ -55,6 +56,7 @@ LibRaw sample programs
 
 %patch0 -p0 -b .pkgconfig
 %patch1 -p1 -b .CVE-2015-8366
+%patch2 -p0 -b .ambiguous
 
 %build
 %configure --enable-examples=yes --enable-jasper --enable-lcms \
@@ -75,17 +77,14 @@ chmod 644 manual/*.html
 make install DESTDIR=%{buildroot}
 
 %files
-%defattr(-,root,root,-)
 %doc Changelog.txt
 %license LICENSE.CDDL LICENSE.LGPL COPYRIGHT
 %{_libdir}/*.so.*
 
 %files static
-%defattr(-,root,root,-)
 %{_libdir}/*.a
 
 %files devel
-%defattr(-,root,root,-)
 %doc manual
 %doc samples
 %dir %{_includedir}/libraw
@@ -96,13 +95,16 @@ make install DESTDIR=%{buildroot}
 %exclude %{_docdir}/libraw/*
 
 %files samples
-%defattr(-,root,root,-)
 %{_bindir}/*
 
 %post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
 
 %changelog
+* Fri Jan 19 2018 Gwyn Ciesla <limburgher@gmail.com> - 0.18.7-1
+- 0.18.7
+- Patch for ambiguous function call.
+
 * Wed Dec 06 2017 Gwyn Ciesla <limburgher@gmail.com> - 0.18.6-1
 - 0.18.6
 
diff --git a/sources b/sources
index 761d21d..881eec1 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
-SHA512 (LibRaw-0.18.6.tar.gz) = ce916a85dcc8ad50a631e9f0e4532d4cc300624b5c78d233531317f33cdf74363cdbcab1fbef3207e89b77bac5be370ef8ff1b806dbb9ae2c4cc0ec607b53e55
-SHA512 (LibRaw-demosaic-pack-GPL2-0.18.6.tar.gz) = 2a4f317c2594825a7a7ad62eb5592ad3d512026dc49b87123ae4f5a05731912fcf4f3e22169acbc1decf6b79aec34a7250d892b686fe824f8bb2c5afa759c7ae
-SHA512 (LibRaw-demosaic-pack-GPL3-0.18.6.tar.gz) = 53ad72654f407dbb3b591f2d1ff12de1cb273de5339d598e76260ee2e2c4095d70d3b0f30536cbb7eb06d802bcf6cc76e6b870837a3e4dc640f4a14da020a704
+SHA512 (LibRaw-0.18.7.tar.gz) = 5d906e69427d4f9edff8b3bc24eb85896e037dd98578cf07c668b96f6abd82bc8dd9f937ecbca6472d334c4cf8d8cbc8b07c2c84aba748e22ec55cecc6a4ed78
+SHA512 (LibRaw-demosaic-pack-GPL2-0.18.7.tar.gz) = 1a967eb06807bc5ce2177d4e13d394e8f4afe15e5ef07d9a49c1a2172f0961cd122a3bfa84fa66a203766d50735adacbffd48ba8deead8a202c3c2a1e4a97ffa
+SHA512 (LibRaw-demosaic-pack-GPL3-0.18.7.tar.gz) = 347a39d8326e4614b83c2721baa09414738416d405d7db516d155a867902dd85cf51d156705d1fd0bc933802cd3a01cfb1c9da43f4cdff15b7a7253674b91c4a