diff --git a/pkg/solana/codec/discriminator_extractor_test.go b/pkg/solana/codec/discriminator_extractor_test.go
index 32426fbee..53ad41a2b 100644
--- a/pkg/solana/codec/discriminator_extractor_test.go
+++ b/pkg/solana/codec/discriminator_extractor_test.go
@@ -38,7 +38,7 @@ func FuzzExtractorHappyPath(f *testing.F) {
 
 		stdDecoded, err := base64.StdEncoding.DecodeString(testString)
 		if err == nil {
-			require.Equal(t, stdDecoded[:8], extractor.Extract(testString))
+			require.Equal(t, [8]byte(stdDecoded[:8]), extractor.Extract(testString))
 		}
 	})
 }