diff --git a/x/wasm/internal/keeper/ioutil_test.go b/x/wasm/internal/keeper/ioutil_test.go
index 6a583a781b..972a3ed495 100644
--- a/x/wasm/internal/keeper/ioutil_test.go
+++ b/x/wasm/internal/keeper/ioutil_test.go
@@ -44,10 +44,14 @@ func TestUncompress(t *testing.T) {
 			src:       []byte{0x1, 0x2},
 			expResult: []byte{0x1, 0x2},
 		},
-		"handle big input slice": {
+		"handle input slice exceeding limit": {
 			src:      []byte(strings.Repeat("a", maxSize+1)),
 			expError: types.ErrLimit,
 		},
+		"handle input slice at limit": {
+			src:       []byte(strings.Repeat("a", maxSize)),
+			expResult: []byte(strings.Repeat("a", maxSize)),
+		},
 		"handle gzip identifier only": {
 			src:      gzipIdent,
 			expError: io.ErrUnexpectedEOF,