diff --git a/SPECS/zvbi.spec b/SPECS/zvbi.spec
index 4e20003..3dc2e23 100644
--- a/SPECS/zvbi.spec
+++ b/SPECS/zvbi.spec
@@ -13,7 +13,7 @@ Patch1:             %{name}-0.2.25-openfix.patch
 # slightly adapted from https://github.com/zapping-vbi/zvbi/commit/ae74ae513714f81b9b8abdb12e1b235d16fad74e.patch
 Patch2:             zvbi-0.2.42-fix_sincos_declaration.patch
 
-BuildRequires:      autoconf
+BuildRequires:      autoconf2.7x
 BuildRequires:      automake
 BuildRequires:      bdftopcf
 BuildRequires:      doxygen