diff --git a/kdelibs.spec b/kdelibs.spec
index 43e77e9..94091d0 100644
--- a/kdelibs.spec
+++ b/kdelibs.spec
@@ -278,7 +278,7 @@ make %{?_smp_mflags} -C %{_target_platform}
 
 # build apidocs
 %if 0%{?apidocs}
-export QTDOCDIR=`pkg-config --variable=docdir Qt`
+export QTDOCDIR="%{?_qt4_docdir}%{?!_qt4_docdir:%(pkg-config --variable=docdir Qt)}"
 %if 0%{?apidocs_qch}
 export PROJECT_NAME="%{name}"
 export PROJECT_VERSION="%{version}%{?alphatag}"