diff --git a/tests/proptest/proptest.c b/tests/proptest/proptest.c
index 4bd08665..5abbf029 100644
--- a/tests/proptest/proptest.c
+++ b/tests/proptest/proptest.c
@@ -151,6 +151,8 @@ dump_prop(uint32_t prop_id, uint64_t value)
 	printf("\t\tvalue:");
 	if (drm_property_type_is(prop, DRM_MODE_PROP_BLOB))
 		dump_blob(value);
+	else if (drm_property_type_is(prop, DRM_MODE_PROP_SIGNED_RANGE))
+		printf(" %"PRId64"\n", value);
 	else
 		printf(" %"PRIu64"\n", value);