diff --git a/tests/fuzzer.c b/tests/fuzzer.c
index 4901376ff..b20031708 100644
--- a/tests/fuzzer.c
+++ b/tests/fuzzer.c
@@ -3922,6 +3922,20 @@ static int basicUnitTests(U32 const seed, double compressibility)
                 goto _output_error;
             }
 
+            /* too short srcSize: must fail */
+            compressedSize = ZSTD_compressSequencesAndLiterals(cctx, dst, dstCapacity, seqs, nbSeqs, src, litSize, srcSize-1);
+            if (!ZSTD_isError(compressedSize)) {
+                DISPLAY("ZSTD_compressSequencesAndLiterals() should have failed: srcSize is too short\n");
+                goto _output_error;
+            }
+
+            /* too large srcSize: must fail */
+            compressedSize = ZSTD_compressSequencesAndLiterals(cctx, dst, dstCapacity, seqs, nbSeqs, src, litSize, srcSize+1);
+            if (!ZSTD_isError(compressedSize)) {
+                DISPLAY("ZSTD_compressSequencesAndLiterals() should have failed: srcSize is too short\n");
+                goto _output_error;
+            }
+
             /* correct amount of literals: should compress successfully */
             compressedSize = ZSTD_compressSequencesAndLiterals(cctx, dst, dstCapacity, seqs, nbSeqs, litBuffer, litSize, srcSize);
             if (ZSTD_isError(compressedSize)) {