diff --git a/libidn2.spec b/libidn2.spec
index 4cad8ed..3c9e4a7 100644
--- a/libidn2.spec
+++ b/libidn2.spec
@@ -14,6 +14,7 @@ BuildRequires:    gnupg2
 BuildRequires:    gcc
 BuildRequires:    gettext
 BuildRequires:    libunistring-devel
+BuildRequires:    automake
 Provides:         bundled(gnulib)
 
 %description