diff --git a/Makefile b/Makefile
index cc4e57b..e4fa163 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ test:
 			$(ZSH) -f tests/test-highlighting.zsh "$${test##*/}"; \
 			: $$(( result |= $$? )); \
 		fi \
-	done | $(ZSH) -f tests/tap-colorizer.zsh; \
+	done; \
 	exit $$result
 
 perf:
diff --git a/tests/tap-colorizer.zsh b/tests/tap-colorizer.zsh
old mode 100644
new mode 100755
diff --git a/tests/test-highlighting.zsh b/tests/test-highlighting.zsh
index a67229a..1eed974 100755
--- a/tests/test-highlighting.zsh
+++ b/tests/test-highlighting.zsh
@@ -59,6 +59,8 @@ run_test() {
   local -a highlight_zone
   local unused_highlight='bg=red,underline' # a style unused by anything else, for tests to use
 
+  echo "# ${1:t:r}"
+
   # Load the data and prepare checking it.
   PREBUFFER= BUFFER= ;
   . "$1"
@@ -109,8 +111,7 @@ run_test() {
 # Process each test data file in test data directory.
 integer something_failed=0
 for data_file in ${0:h:h}/highlighters/$1/test-data/*.zsh; do
-  echo "# ${data_file:t:r}"
-  (run_test "$data_file") | tee >(cat) | grep -v '^not ok.*# TODO' | grep -q '^not ok\|^ok.*# TODO' && (( something_failed=1 ))
+  (run_test "$data_file") | tee >(${0:A:h}/tap-colorizer.zsh) | grep -v '^not ok.*# TODO' | grep -q '^not ok\|^ok.*# TODO' && (( something_failed=1 ))
   (( $pipestatus[1] )) && exit 2
 done