diff --git a/tests/md5 b/tests/md5
new file mode 100755
index 0000000..788a152
--- /dev/null
+++ b/tests/md5
@@ -0,0 +1,7 @@
+#!/bin/sh
+file=$1
+if type md5 > /dev/null 2>&1; then
+    md5 -q $*
+else
+    md5sum $* | awk '{print $1}'
+fi
diff --git a/tests/unittests.cfg b/tests/unittests.cfg
index bc32d0d..cc40906 100644
--- a/tests/unittests.cfg
+++ b/tests/unittests.cfg
@@ -37,33 +37,33 @@ include keys.cfg
 
 <test check-streams>
   <test check-streams-8-8>
-    md5 = `md5 -q ../COPYING`
-    cmd = ./pipetest 8 8 e < ../COPYING | ./pipetest 8 8 d | md5 -q
+    md5 = `./md5 ../COPYING`
+    cmd = ./pipetest 8 8 e < ../COPYING | ./pipetest 8 8 d | ./md5
     expect = /$md5/
   </test>
   <test check-streams-8-16>
-    md5 = `md5 -q ../COPYING`
-    cmd = ./pipetest 8 16 e < ../COPYING | ./pipetest 8 16 d | md5 -q
+    md5 = `./md5 ../COPYING`
+    cmd = ./pipetest 8 16 e < ../COPYING | ./pipetest 8 16 d | ./md5
     expect = /$md5/
   </test>
   <test check-streams-16-8>
-    md5 = `md5 -q ../COPYING`
-    cmd = ./pipetest 16 8 e < ../COPYING | ./pipetest 16 8 d | md5 -q
+    md5 = `./md5 ../COPYING`
+    cmd = ./pipetest 16 8 e < ../COPYING | ./pipetest 16 8 d | ./md5
     expect = /$md5/
   </test>
   <test check-streams-64-32>
-    md5 = `md5 -q ../COPYING`
-    cmd = ./pipetest 64 32 e < ../COPYING | ./pipetest 64 32 d | md5 -q
+    md5 = `./md5 ../COPYING`
+    cmd = ./pipetest 64 32 e < ../COPYING | ./pipetest 64 32 d | ./md5
     expect = /$md5/
   </test>
   <test check-streams-32-64>
-    md5 = `md5 -q ../COPYING`
-    cmd = ./pipetest 32 64 e < ../COPYING | ./pipetest 32 64 d | md5 -q
+    md5 = `./md5 ../COPYING`
+    cmd = ./pipetest 32 64 e < ../COPYING | ./pipetest 32 64 d | ./md5
     expect = /$md5/
   </test>
   <test check-streams-64-64>
-    md5 = `md5 -q ../COPYING`
-    cmd = ./pipetest 64 64 e < ../COPYING | ./pipetest 64 64 d | md5 -q
+    md5 = `./md5 ../COPYING`
+    cmd = ./pipetest 64 64 e < ../COPYING | ./pipetest 64 64 d | ./md5
     expect = /$md5/
   </test>
 </test>