diff --git a/pkgconfig/Makefile.am b/pkgconfig/Makefile.am
index 847b9dd26b..a294dc11cf 100644
--- a/pkgconfig/Makefile.am
+++ b/pkgconfig/Makefile.am
@@ -23,3 +23,5 @@ EXTRA_DIST = \
 	gstreamer-uninstalled.pc.in \
 	gstreamer-control.pc.in \
 	gstreamer-control-uninstalled.pc.in
+
+CLEANFILES = $(pcfiles) $(pcfiles_uninstalled)
diff --git a/tests/old/testsuite/threads/Makefile.am b/tests/old/testsuite/threads/Makefile.am
index 4f136100db..3f9eb5200f 100644
--- a/tests/old/testsuite/threads/Makefile.am
+++ b/tests/old/testsuite/threads/Makefile.am
@@ -24,3 +24,5 @@ thread4_SOURCES = thread.c
 thread4_CFLAGS = -DTESTNUM=4 $(AM_CFLAGS)
 thread5_SOURCES = thread.c
 thread5_CFLAGS = -DTESTNUM=5 $(AM_CFLAGS)
+
+CLEANFILES = threadstest-registry.xml
diff --git a/testsuite/threads/Makefile.am b/testsuite/threads/Makefile.am
index 4f136100db..3f9eb5200f 100644
--- a/testsuite/threads/Makefile.am
+++ b/testsuite/threads/Makefile.am
@@ -24,3 +24,5 @@ thread4_SOURCES = thread.c
 thread4_CFLAGS = -DTESTNUM=4 $(AM_CFLAGS)
 thread5_SOURCES = thread.c
 thread5_CFLAGS = -DTESTNUM=5 $(AM_CFLAGS)
+
+CLEANFILES = threadstest-registry.xml