diff --git a/InstallAppdata.sh b/InstallAppdata.sh
index 6def0b1..bff742d 100644
--- a/InstallAppdata.sh
+++ b/InstallAppdata.sh
@@ -34,14 +34,18 @@ done
 # Install new appdata files
 while ([ "$1" = "-R" ]); do
   case $4 in
-	  rpm-md)
-		  appstream-util install-origin "$2" $6$RPMMD/*appdata.xml.gz $6$RPMMD/*app-icons.tar.gz 2>&1 > /dev/null
-		  ;;
-	  yast2)
-		  appstream-util install-origin "$2" "$6$YAST2/appdata.xml.gz" "$6$YAST2/appdata-icons.tar.gz" 2>&1 > /dev/null
-		  ;;
-	  *)
-		  echo "unknown repo type - Appstream data not considered"
+    rpm-md)
+      if appstream-util validate-relax "$6$RPMMD/*appdata.xml.gz"; then
+        appstream-util install-origin "$2" "$6$RPMMD/*appdata.xml.gz" $6$RPMMD/*app-icons.tar.gz 2>&1 > /dev/null
+      fi
+      ;;
+    yast2)
+      if appstream-util validate-relax "$6$YAST2/appdata.xml.gz"; then
+        appstream-util install-origin "$2" "$6$YAST2/appdata.xml.gz" "$6$YAST2/appdata-icons.tar.gz" 2>&1 > /dev/null
+      fi
+      ;;
+    *)
+      echo "unknown repo type - Appstream data not considered"
   esac
   shift 6
 done
diff --git a/libzypp-plugin-appdata.changes b/libzypp-plugin-appdata.changes
index e08dbf5..93114bc 100644
--- a/libzypp-plugin-appdata.changes
+++ b/libzypp-plugin-appdata.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Mar 31 13:41:00 UTC 2015 - dimstar@opensuse.org
+
+- InstallAppdata.sh: only install AppStream metadata, that
+  validates.
+
 -------------------------------------------------------------------
 Fri Mar 20 12:55:38 UTC 2015 - dimstar@opensuse.org
 
diff --git a/libzypp-plugin-appdata.spec b/libzypp-plugin-appdata.spec
index 4c11197..8ed0fe1 100644
--- a/libzypp-plugin-appdata.spec
+++ b/libzypp-plugin-appdata.spec
@@ -30,7 +30,7 @@ BuildArch:      noarch
 BuildRequires:  appstream-glib >= 0.2.4
 BuildRequires:  fdupes
 # appstream-glib >= 0.3.6 is the first to correctly to appstream-util uninstall in /var/cache
-Requires:       appstream-glib >= 0.3.6
+Requires:       appstream-glib > 0.3.5
 # appdata hook was introduced in libzypp 14.29.4
 Requires:       libzypp >= 14.29.4