--- a/tests/testEnc.sh
+++ b/tests/testEnc.sh
@@ -1181,9 +1181,6 @@ for aesgcm_k_l in $aesgcm_key_lengths ; do
             else
                 # generate binary file out of base64
                 DECODE="-d"
-                if [ "`uname`" = "Darwin" ]; then
-		            DECODE="-D"
-                fi
                 cat "$topfolder/$base_test_name.data" | base64 $DECODE > $tmpfile.3
                 execEncTest "$res_success" \
                     "" \