diff --git a/GITHUB_SHA.h b/GITHUB_SHA.h
index 2b88c4b..5c0ffb6 100644
--- a/GITHUB_SHA.h
+++ b/GITHUB_SHA.h
@@ -1 +1 @@
-#define GITHUB_SHA "devel-overcurrent-202307061318Z"
+#define GITHUB_SHA "devel-overcurrent-202307061457Z"
diff --git a/installer.sh b/installer.sh
index 4821284..857710e 100755
--- a/installer.sh
+++ b/installer.sh
@@ -38,6 +38,11 @@ function need () {
 
 need git
 
+if cat /etc/issue | egrep '^Raspbian' 2>&1 >/dev/null ; then
+    # we are on a raspi where we do not support graphical
+    unset DISPLAY
+fi
+
 if [ x$DISPLAY != x ] ; then
     # we have DISPLAY, do the graphic thing
     need python3-tk