diff --git a/main.c b/main.c
index cd22396..ea3cceb 100644
--- a/main.c
+++ b/main.c
@@ -91,7 +91,7 @@ static const char *algo = NULL;
 static int do_compress = 0;
 static int do_uncompress = 0;
 static int cksum_bytes, mac_bytes;
-static int cksum = 0;
+static int cksum = 0, t_errored = 0;
 static int rab_blk_size = 0;
 static dedupe_context_t *rctx;
 static crypto_ctx_t crypto_ctx;
@@ -332,6 +332,7 @@ redo:
 			fprintf(stderr, "Chunk %d, HMAC verification failed\n", tdat->id);
 			main_cancel = 1;
 			tdat->len_cmp = 0;
+			t_errored = 1;
 			sem_post(&tdat->cmp_done_sem);
 			return;
 		}
@@ -374,6 +375,7 @@ redo:
 			fprintf(stderr, "Chunk %d, Header CRC verification failed\n", tdat->id);
 			main_cancel = 1;
 			tdat->len_cmp = 0;
+			t_errored = 1;
 			sem_post(&tdat->cmp_done_sem);
 			return;
 		}
@@ -412,6 +414,7 @@ redo:
 			if (rv == -1) {
 				tdat->len_cmp = 0;
 				fprintf(stderr, "ERROR: Chunk %d, decompression failed.\n", tdat->id);
+				t_errored = 1;
 				goto cont;
 			}
 		} else {
@@ -446,6 +449,7 @@ redo:
 	if (rv == -1) {
 		tdat->len_cmp = 0;
 		fprintf(stderr, "ERROR: Chunk %d, decompression failed.\n", tdat->id);
+		t_errored = 1;
 		goto cont;
 	}
 	/* Rebuild chunk from dedup blocks. */
@@ -461,6 +465,7 @@ redo:
 			fprintf(stderr, "ERROR: Chunk %d, dedup recovery failed.\n", tdat->id);
 			rv = -1;
 			tdat->len_cmp = 0;
+			t_errored = 1;
 			goto cont;
 		}
 		_chunksize = tdat->len_cmp;
@@ -480,6 +485,7 @@ redo:
 		if (memcmp(checksum, tdat->checksum, cksum_bytes) != 0) {
 			tdat->len_cmp = 0;
 			fprintf(stderr, "ERROR: Chunk %d, checksums do not match.\n", tdat->id);
+			t_errored = 1;
 		}
 	}
 
@@ -1010,6 +1016,7 @@ start_decompress(const char *filename, const char *to_filename)
 		thread = 0;
 	}
 uncomp_done:
+	if (t_errored) err = t_errored;
 	if (thread) {
 		for (i = 0; i < nprocs; i++) {
 			tdat = dary[i];
@@ -1203,6 +1210,7 @@ plain_compress:
 			 */
 			main_cancel = 1;
 			tdat->len_cmp = 0;
+			t_errored = 1;
 			sem_post(&tdat->cmp_done_sem);
 			return (0);
 		}
@@ -1802,6 +1810,7 @@ start_compress(const char *filename, uint64_t chunksize, int level)
 	}
 
 comp_done:
+	if (t_errored) err = t_errored;
 	if (thread) {
 		for (i = 0; i < nprocs; i++) {
 			tdat = dary[i];
diff --git a/test/t9.tst b/test/t9.tst
index f19ada3..38b7164 100644
--- a/test/t9.tst
+++ b/test/t9.tst
@@ -35,6 +35,7 @@ done
 
 for feat in "-S CRC64" "-S SKEIN256" "-S SKEIN512" "-S SHA256" "-S SHA512"
 do
+	rm -f combined.dat.1.pz
 	rm -f combined.dat.pz
 	rm -f combined.dat.1
 
@@ -49,7 +50,7 @@ do
 	fi
 
 	echo "Corrupting file header ..."
-	dd if=/dev/urandom of=combined.dat.pz bs=4 seek=1 count=1
+	dd if=/dev/urandom conv=notrunc of=combined.dat.pz bs=4 seek=1 count=1
 	cmd="../../pcompress -d combined.dat.pz combined.dat.1"
 	eval $cmd
 	if [ $? -eq 0 ]
@@ -73,8 +74,9 @@ do
 		exit 1
 	fi
 
+	cp combined.dat.pz combined.dat.1.pz
 	echo "Corrupting file ..."
-	dd if=/dev/urandom of=combined.dat.pz bs=4 seek=100 count=1
+	dd if=/dev/urandom conv=notrunc of=combined.dat.pz bs=4 seek=100 count=1
 	cmd="../../pcompress -d combined.dat.pz combined.dat.1"
 	eval $cmd
 	if [ $? -eq 0 ]
@@ -82,10 +84,30 @@ do
 		echo "${cmd} DID NOT ERROR where expected."
 		rm -f combined.dat.pz
 		rm -f combined.dat.1
+		rm -f combined.dat.1.pz
+		exit 1
+	fi
+
+	rm -f combined.dat.1
+	cp combined.dat.1.pz combined.dat.pz
+	echo "Corrupting file ..."
+	dd if=/dev/urandom conv=notrunc of=combined.dat.1.pz bs=4 seek=51 count=1
+	cmd="../../pcompress -d combined.dat.1.pz combined.dat.1"
+	eval $cmd
+	if [ $? -eq 0 ]
+	then
+		echo "${cmd} DID NOT ERROR where expected."
+		rm -f combined.dat.pz
+		rm -f combined.dat.1
+		rm -f combined.dat.1.pz
 		exit 1
 	fi
 done
 
+rm -f combined.dat.1.pz
+rm -f combined.dat.pz
+rm -f combined.dat.1
+
 echo "#################################################"
 echo ""