diff --git a/test cases/common/27 pipeline/meson.build b/test cases/common/27 pipeline/meson.build
index 200a6d8f2..bbb49d627 100644
--- a/test cases/common/27 pipeline/meson.build	
+++ b/test cases/common/27 pipeline/meson.build	
@@ -15,3 +15,7 @@ generated = gen.process(['input_src.dat'])
 e2 = executable('prog', 'prog.c', generated)
 
 test('pipelined', e2)
+
+# This is in a subdirectory to make sure
+# we write proper subdir paths to output.
+subdir('src')
diff --git a/test cases/common/28 pipeline/src/input_src.dat b/test cases/common/27 pipeline/src/input_src.dat
similarity index 100%
rename from test cases/common/28 pipeline/src/input_src.dat
rename to test cases/common/27 pipeline/src/input_src.dat
diff --git a/test cases/common/28 pipeline/src/meson.build b/test cases/common/27 pipeline/src/meson.build
similarity index 100%
rename from test cases/common/28 pipeline/src/meson.build
rename to test cases/common/27 pipeline/src/meson.build
diff --git a/test cases/common/28 pipeline/src/prog.c b/test cases/common/27 pipeline/src/prog.c
similarity index 100%
rename from test cases/common/28 pipeline/src/prog.c
rename to test cases/common/27 pipeline/src/prog.c
diff --git a/test cases/common/28 pipeline/src/srcgen.c b/test cases/common/27 pipeline/src/srcgen.c
similarity index 100%
rename from test cases/common/28 pipeline/src/srcgen.c
rename to test cases/common/27 pipeline/src/srcgen.c
diff --git a/test cases/common/28 pipeline/meson.build b/test cases/common/28 pipeline/meson.build
deleted file mode 100644
index 0a430bde1..000000000
--- a/test cases/common/28 pipeline/meson.build	
+++ /dev/null
@@ -1,5 +0,0 @@
-project('pipeline test', 'c')
-
-# This is in a subdirectory to make sure
-# we write proper subdir paths to output.
-subdir('src')