diff --git a/tests/md5sum/Makefile.am b/tests/md5sum/Makefile.am
index 19b099b92..c3c9bd635 100644
--- a/tests/md5sum/Makefile.am
+++ b/tests/md5sum/Makefile.am
@@ -6,7 +6,7 @@ TESTS_ENVIRONMENT = \
   top_srcdir=$(top_srcdir) \
   srcdir=$(srcdir) \
   PERL="@PERL@" \
-  PATH=../../src:$$PATH \
+  PATH=`pwd`/../../src:$$PATH \
   PROG=md5sum
 
 TESTS = basic-1 newline-1