diff --git a/rawstudio.spec b/rawstudio.spec
index e9949ec..28b5c60 100644
--- a/rawstudio.spec
+++ b/rawstudio.spec
@@ -1,6 +1,6 @@
 Name:          rawstudio
 Version:       2.0
-Release:       3mamba
+Release:       4mamba
 Summary:       Read, manipulate and convert digital camera raw images
 Group:         Graphical Desktop/Applications/Graphics
 Vendor:        openmamba
@@ -41,9 +41,9 @@ BuildRequires: libstdc++6-devel
 BuildRequires: libtiff-devel
 BuildRequires: libxml2-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libgphoto2-devel >= 1:2.5.19-1mamba
 BuildRequires: liblensfun-devel >= 0.3.2-1mamba
 BuildRequires: libxml2-devel
-BuildRequires: libgphoto2-devel >= 1:2.5
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -77,7 +77,9 @@ mkdir librawstudio/lib
 %patch2 -p1
 
 %build
-%configure
+%configure \
+   CXXFLAGS="%{optflags} -std=c++03"
+
 %make LIBS="`pkg-config --libs gthread-2.0`"
 
 %install
@@ -121,6 +123,9 @@ echo "Encoding=UTF-8" >> %{buildroot}%{_datadir}/applications/rawstudio.desktop
 %{_libdir}/pkgconfig/rawstudio-2.0.pc
 
 %changelog
+* Tue Oct 09 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 2.0-4mamba
+- rebuilt by autoport with build requirements: libgphoto2-devel>=2.5.19-1mamba
+
 * Sat Mar 12 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 2.0-3mamba
 - rebuilt by autoport with build requirements: liblensfun-devel>=0.3.2-1mamba