diff --git a/kpmcore.spec b/kpmcore.spec
index 3dc7822..e3a85e4 100644
--- a/kpmcore.spec
+++ b/kpmcore.spec
@@ -1,6 +1,6 @@
 Name:          kpmcore
 Version:       3.3.0
-Release:       1mamba
+Release:       2mamba
 Summary:       Library for managing partitions
 Group:         System/Libraries
 Vendor:        openmamba
@@ -56,7 +56,7 @@ This package contains libraries and header files for developing applications tha
 %setup -q
 
 %build
-%cmake -d build
+%cmake_kde5 -d build
 %make
 
 %install
@@ -72,8 +72,8 @@ This package contains libraries and header files for developing applications tha
 %files -n lib%{name}
 %defattr(-,root,root)
 %{_libdir}/libkpmcore.so.*
-%{_libdir}/plugins/libpmdummybackendplugin.so
-%{_libdir}/plugins/libpmlibpartedbackendplugin.so
+%{_qt5_plugindir}/libpmdummybackendplugin.so
+%{_qt5_plugindir}/libpmlibpartedbackendplugin.so
 %{_datadir}/kservices5/pmdummybackendplugin.desktop
 %{_datadir}/kservices5/pmlibpartedbackendplugin.desktop
 %{_kde5_servicetypesdir}/pmcorebackendplugin.desktop
@@ -87,6 +87,9 @@ This package contains libraries and header files for developing applications tha
 %{_libdir}/libkpmcore.so
 
 %changelog
+* Sun Dec 31 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 3.3.0-2mamba
+- rebuilt with cmake_kde5 to fix plugin installation directory for calamares installer
+
 * Thu Dec 21 2017 Automatic Build System <autodist@mambasoft.it> 3.3.0-1mamba
 - automatic version update by autodist