diff --git a/installation-images-SLES.spec b/installation-images-SLES.spec
index 6579019..ef84676 100644
--- a/installation-images-SLES.spec
+++ b/installation-images-SLES.spec
@@ -252,6 +252,7 @@ BuildRequires:  dos2unix
 BuildRequires:  ftp
 BuildRequires:  ipw-firmware
 BuildRequires:  tftp
+BuildRequires:  hyper-v
 %if %{with xen}
 BuildRequires:  kernel-xen
 BuildRequires:  xen-kmp-default
diff --git a/installation-images-openSUSE.spec b/installation-images-openSUSE.spec
index bf30cef..67571ec 100644
--- a/installation-images-openSUSE.spec
+++ b/installation-images-openSUSE.spec
@@ -252,6 +252,7 @@ BuildRequires:  dos2unix
 BuildRequires:  ftp
 BuildRequires:  ipw-firmware
 BuildRequires:  tftp
+BuildRequires:  hyper-v
 %if %{with xen}
 BuildRequires:  kernel-xen
 BuildRequires:  xen-kmp-default