diff --git a/firmware/2lib/2misc.c b/firmware/2lib/2misc.c
index 8d2cbf3fa6..31884732e0 100644
--- a/firmware/2lib/2misc.c
+++ b/firmware/2lib/2misc.c
@@ -49,8 +49,8 @@ int vb2_read_gbb_header(struct vb2_context *ctx, struct vb2_gbb_header *gbb)
 	if (gbb->major_version != VB2_GBB_MAJOR_VER)
 		return VB2_ERROR_GBB_VERSION;
 
-	/* Current code is not backwards-compatible to 1.0 headers */
-	if (gbb->minor_version == 0)
+	/* Current code is not backwards-compatible to 1.1 headers or older */
+	if (gbb->minor_version < VB2_GBB_MINOR_VER)
 		return VB2_ERROR_GBB_TOO_OLD;
 
 	/*
diff --git a/tests/vb2_misc_tests.c b/tests/vb2_misc_tests.c
index 437b247f7c..4d8045091e 100644
--- a/tests/vb2_misc_tests.c
+++ b/tests/vb2_misc_tests.c
@@ -166,8 +166,8 @@ static void gbb_tests(void)
 	TEST_SUCC(vb2_read_gbb_header(&cc, &gbbdest),
 		  "read gbb header minor++");
 	gbb.minor_version = 1;
-	TEST_SUCC(vb2_read_gbb_header(&cc, &gbbdest),
-		  "read gbb header 1.1");
+	TEST_EQ(vb2_read_gbb_header(&cc, &gbbdest),
+		VB2_ERROR_GBB_TOO_OLD, "read gbb header 1.1 fails");
 	gbb.minor_version = 0;
 	TEST_EQ(vb2_read_gbb_header(&cc, &gbbdest),
 		VB2_ERROR_GBB_TOO_OLD, "read gbb header 1.0 fails");