diff --git a/tools/rpm/IMP-copr.spec.in b/tools/rpm/IMP-copr.spec.in
index d038b03a09..e0825e3357 100644
--- a/tools/rpm/IMP-copr.spec.in
+++ b/tools/rpm/IMP-copr.spec.in
@@ -397,9 +397,9 @@ export IMP_DATA=${RPM_BUILD_ROOT}%{_prefix}/share/IMP
 export IMP_EXAMPLE_DATA=${RPM_BUILD_ROOT}%{_prefix}/share/doc/%{name}-%{version}/examples
 export PATH=${RPM_BUILD_ROOT}%{_prefix}/bin:${PATH}
 %if 0%{?fedora}
-export MOCK=fedora-%{fedora}-%{_arch}
+export MOCK_CONFIG=fedora-%{fedora}-%{_arch}
 %else
-export MOCK=epel-%{rhel}-%{_arch}
+export MOCK_CONFIG=epel-%{rhel}-%{_arch}
 %endif
 cd imp/tools/nightly-tests/test-install