diff --git a/lib/compression/lzxpress.c b/lib/compression/lzxpress.c
index 288fa0bcba8..f7da9b817f9 100644
--- a/lib/compression/lzxpress.c
+++ b/lib/compression/lzxpress.c
@@ -218,6 +218,10 @@ ssize_t lzxpress_decompress(const uint8_t *input,
 	uint32_t indicator, indicator_bit;
 	uint32_t nibble_index;
 
+	if (input_size == 0) {
+		return 0;
+	}
+
 	output_index = 0;
 	input_index = 0;
 	indicator = 0;
diff --git a/selftest/knownfail.d/lzexpress b/selftest/knownfail.d/lzexpress
deleted file mode 100644
index a7dafdbaa33..00000000000
--- a/selftest/knownfail.d/lzexpress
+++ /dev/null
@@ -1 +0,0 @@
-samba4.local.compression.lzxpress_round_trip