diff --git a/diff-obs b/diff-obs
new file mode 100755
index 0000000..2647033
--- /dev/null
+++ b/diff-obs
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+srcpkg=icingaweb2
+project=server:monitoring
+
+if [ -n "$1" ]; then
+  project="$1"
+fi
+
+if ! which osc &>/dev/null; then
+    echo "This script needs 'osc' to download files from OpenSuSE Build Service" >&2
+    exit 1
+fi
+
+# You can not download this un-authenticated!
+osc cat "$project" "${srcpkg}" "${srcpkg}".spec >"${srcpkg}".obs.spec~
+
+# compare without a changelog
+temp_compare="$(mktemp -d)"
+trap 'rm -rf "${temp_compare}"' EXIT SIGINT SIGTERM
+
+for file in "${srcpkg}.obs.spec~" "${srcpkg}.spec"
+do
+  sed '/^%changelog/q' "${file}" >"${temp_compare}/${file}"
+done
+
+(
+  cd "${temp_compare}"
+  diff --color=auto -Nu "${srcpkg}.obs.spec~" "${srcpkg}.spec"
+)
+
+# vi: ts=2 sw=2 expandtab