diff --git a/tests/series-format-patch-bb.ref b/tests/series-format-patch-bb.ref
index 4b7cbee..248939f 100644
--- a/tests/series-format-patch-bb.ref
+++ b/tests/series-format-patch-bb.ref
@@ -15,5 +15,5 @@ SRC_URI += "\
   "
 UMPF_BASE = "base"
 UMPF_VERSION = "20240314-2"
-PV = "${UMPF_BASE}-${UMPF_VERSION}"
+UMPF_PV = "${UMPF_BASE}-${UMPF_VERSION}"
 # umpf-end
diff --git a/umpf b/umpf
index 9bf9019..5d127de 100755
--- a/umpf
+++ b/umpf
@@ -1422,7 +1422,7 @@ format_patch_end() {
 		local base_name="$(<"${STATE}/base-name")"
 		echo "UMPF_BASE = \"${base_name//v/}\"" >&${series_out}
 		echo "UMPF_VERSION = \"$(<"${STATE}/version")\"" >&${series_out}
-		echo "PV = \"\${UMPF_BASE}-\${UMPF_VERSION}\"" >&${series_out}
+		echo "UMPF_PV = \"\${UMPF_BASE}-\${UMPF_VERSION}\"" >&${series_out}
 		if [ "$(head -n 1 README 2>/dev/null)" = "Linux kernel" ]; then
 			echo "LINUX_VERSION = \"\${UMPF_BASE}\"" >&${series_out}
 		fi