diff --git a/Makefile.am b/Makefile.am
index b35c595..f870182 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -37,5 +37,6 @@ TESTS = \
 	tests/encode-small.sh
 SH_LOG_COMPILER = /bin/sh
 AM_TESTS_ENVIRONMENT = PATH='$(srcdir)':"$$PATH"; export PATH;
+TESTS_ENVIRONMENT = $(AM_TESTS_ENVIRONMENT)
 endif
 TEST_EXTENSIONS = .sh
diff --git a/tests/decode-b58c-fail.sh b/tests/decode-b58c-fail.sh
old mode 100644
new mode 100755
diff --git a/tests/decode-b58c-null.sh b/tests/decode-b58c-null.sh
old mode 100644
new mode 100755
diff --git a/tests/decode-b58c-toolong.sh b/tests/decode-b58c-toolong.sh
old mode 100644
new mode 100755
diff --git a/tests/decode-b58c-tooshort.sh b/tests/decode-b58c-tooshort.sh
old mode 100644
new mode 100755
diff --git a/tests/decode-b58c.sh b/tests/decode-b58c.sh
old mode 100644
new mode 100755
diff --git a/tests/decode-small.sh b/tests/decode-small.sh
old mode 100644
new mode 100755
diff --git a/tests/decode-zero.sh b/tests/decode-zero.sh
old mode 100644
new mode 100755
diff --git a/tests/decode.sh b/tests/decode.sh
old mode 100644
new mode 100755
diff --git a/tests/encode-b58c.sh b/tests/encode-b58c.sh
old mode 100644
new mode 100755
diff --git a/tests/encode-fail.sh b/tests/encode-fail.sh
old mode 100644
new mode 100755
diff --git a/tests/encode-small.sh b/tests/encode-small.sh
old mode 100644
new mode 100755