diff --git a/ghostscript-fonts-grops.changes b/ghostscript-fonts-grops.changes
index 111416e..939ec8c 100644
--- a/ghostscript-fonts-grops.changes
+++ b/ghostscript-fonts-grops.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Apr 27 07:03:13 UTC 2018 - i@marguerite.su
+
+- expand groff_version macro
+
 -------------------------------------------------------------------
 Fri Apr 27 06:47:46 UTC 2018 - i@marguerite.su
 
diff --git a/ghostscript-fonts-grops.spec b/ghostscript-fonts-grops.spec
index a8b8627..a0d8ca7 100644
--- a/ghostscript-fonts-grops.spec
+++ b/ghostscript-fonts-grops.spec
@@ -70,6 +70,7 @@ echo "${fn}" "${pf}"
 done >>devps/download
 
 %install
+%define groff_version %(groff -v | head -n 1 | sed 's/.*\s//')
 target="%{buildroot}%{_datadir}/groff/%{groff_version}/font/gs"
 install -d "${target}"
 mv "-t${target}" devps