diff --git a/json-c.spec b/json-c.spec
index c819514..85e773a 100644
--- a/json-c.spec
+++ b/json-c.spec
@@ -77,7 +77,7 @@ mkdir -p %{_vpath_builddir}
 
 # The config.h header file is not needed, and
 # may be the cause for undesired trouble.
-rm -f %{_includedir}/%{name}/config.h
+rm -f %{buildroot}%{_includedir}/%{name}/config.h
 
 # Documentation
 mkdir -p %{buildroot}%{_pkgdocdir}