--- a/tests/playTests.sh
+++ b/tests/playTests.sh
@@ -112,22 +112,12 @@ case "$OS" in
 esac
 
 case "$UNAME" in
-  Darwin) MD5SUM="md5 -r" ;;
-  FreeBSD) MD5SUM="gmd5sum" ;;
-  NetBSD) MD5SUM="md5 -n" ;;
-  OpenBSD) MD5SUM="md5" ;;
   *) MD5SUM="md5sum" ;;
 esac
 
 MTIME="stat -c %Y"
-case "$UNAME" in
-    Darwin | FreeBSD | OpenBSD | NetBSD) MTIME="stat -f %m" ;;
-esac
 
 GET_PERMS="stat -c %a"
-case "$UNAME" in
-    Darwin | FreeBSD | OpenBSD | NetBSD) GET_PERMS="stat -f %Lp" ;;
-esac
 
 assertFilePermissions() {
     STAT1=$($GET_PERMS "$1")
@@ -967,7 +957,6 @@ $MD5SUM dirTestDict/* > tmph1
 zstd -f --rm dirTestDict/* -D tmpDictC
 zstd -d --rm dirTestDict/*.zst -D tmpDictC  # note : use internal checksum by default
 case "$UNAME" in
-  Darwin) println "md5sum -c not supported on OS-X : test skipped" ;;  # not compatible with OS-X's md5
   *) $MD5SUM -c tmph1 ;;
 esac
 rm -rf dirTestDict