diff --git a/test/Makefile.am b/test/Makefile.am
index 3a28300..4fac32a 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1,11 +1,7 @@
 
-EXTRA_DIST = rng utils file-00 file-ff file-random file-text
+EXTRA_DIST = $(TESTS) file-00 file-ff file-random file-text
 
 noinst_PROGRAMS = zzcat zzero bug-overflow bug-memory bug-div0
 
-TESTS = check-rng check-overflow check-memory check-div0 check-utils
-
-zzcat_SOURCES = zzcat.c
-
-zzero_SOURCES = zzero.c
+TESTS = check-md5 check-overflow check-memory check-div0 check-rng check-utils
 
diff --git a/test/check-div0 b/test/check-div0
index 899f2d5..c2effa7 100755
--- a/test/check-div0
+++ b/test/check-div0
@@ -22,32 +22,31 @@ echo "*** running zzuf division-by-zero test with seed $seed ***"
 
 echo "*** bug-div0 < /file-00"
 if ! $PROGRAM < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
 echo "*** zzuf -qi -r0 bug-div0 < /file-00"
 if ! "$ZZUF" -r0 -qi "$PROGRAM" < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
 echo "*** zzuf -qi bug-div0 < file-00"
 if "$ZZUF" -qi "$PROGRAM" < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
-echo ""
 if [ "$FAILED" != 0 ]; then
     echo "*** $FAILED tests failed out of $TESTED ***"
     exit 1
diff --git a/test/check-memory b/test/check-memory
index 78f7fe3..48cab4e 100755
--- a/test/check-memory
+++ b/test/check-memory
@@ -22,32 +22,31 @@ echo "*** running zzuf buffer memory test with seed $seed ***"
 
 echo "*** bug-memory < /file-00"
 if ! $PROGRAM < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
 echo "*** zzuf -qi -r0 bug-memory < /file-00"
 if ! "$ZZUF" -r0 -qi "$PROGRAM" < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
 echo "*** zzuf -qi bug-memory < file-00"
 if "$ZZUF" -M 256 -qi "$PROGRAM" < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
-echo ""
 if [ "$FAILED" != 0 ]; then
     echo "*** $FAILED tests failed out of $TESTED ***"
     exit 1
diff --git a/test/check-overflow b/test/check-overflow
index 9bcd171..6610541 100755
--- a/test/check-overflow
+++ b/test/check-overflow
@@ -22,32 +22,31 @@ echo "*** running zzuf buffer overflow test with seed $seed ***"
 
 echo "*** bug-overflow < /file-00"
 if ! $PROGRAM < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
 echo "*** zzuf -qi -r0 bug-overflow < /file-00"
 if ! "$ZZUF" -r0 -qi "$PROGRAM" < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
 echo "*** zzuf -qi bug-overflow < file-00"
 if "$ZZUF" -qi "$PROGRAM" < "$DIR/file-00"; then
-    echo "unexpected exit status $?"
+    echo " unexpected exit status $?"
     FAILED="$(($FAILED + 1))"
 else
-    echo "*** test OK ***"
+    echo " OK"
 fi
 TESTED="$(($TESTED + 1))"
 
-echo ""
 if [ "$FAILED" != 0 ]; then
     echo "*** $FAILED tests failed out of $TESTED ***"
     exit 1
diff --git a/test/check-rng b/test/check-rng
index 54ac2c6..203ca07 100755
--- a/test/check-rng
+++ b/test/check-rng
@@ -66,7 +66,6 @@ checkflip 0.001  167604
 checkflip 0.01  1661055
 checkflip 0.1  15205967
 
-echo ""
 if [ "$FAILED" != 0 ]; then
     echo "*** $FAILED tests failed out of $TESTED ***"
     exit 1
diff --git a/test/check-utils b/test/check-utils
index a80411e..570c1d5 100755
--- a/test/check-utils
+++ b/test/check-utils
@@ -116,7 +116,6 @@ checkutils 0.001
 checkutils 0.1
 checkutils 10.0
 
-echo ""
 if [ "$FAILED" != 0 ]; then
     echo "*** $FAILED tests failed out of $TESTED ***"
     exit 1