diff --git a/tests/playTests.sh b/tests/playTests.sh
index 6179265e..abde72c8 100755
--- a/tests/playTests.sh
+++ b/tests/playTests.sh
@@ -31,8 +31,10 @@ case "$OS" in
     ;;
 esac
 
-case "$OSTYPE" in
-  darwin*) MD5SUM="md5 -r" ;;
+UNAME=$(uname)
+case "$UNAME" in
+  Darwin) MD5SUM="md5 -r" ;;
+  FreeBSD) MD5SUM="gmd5sum" ;;
   *) MD5SUM="md5sum" ;;
 esac
 
@@ -228,8 +230,8 @@ cp ../programs/*.h dirTestDict
 $MD5SUM dirTestDict/* > tmph1
 $ZSTD -f --rm dirTestDict/* -D tmpDictC
 $ZSTD -d --rm dirTestDict/*.zst -D tmpDictC  # note : use internal checksum by default
-case "$OSTYPE" in
-  darwin*) $ECHO "md5sum -c not supported on OS-X : test skipped" ;;  # not compatible with OS-X's md5
+case "$UNAME" in
+  Darwin) $ECHO "md5sum -c not supported on OS-X : test skipped" ;;  # not compatible with OS-X's md5
   *) $MD5SUM -c tmph1 ;;
 esac
 rm -rf dirTestDict