diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile
index 224346426ef22..7d885cff8d79b 100644
--- a/tools/testing/selftests/net/forwarding/Makefile
+++ b/tools/testing/selftests/net/forwarding/Makefile
@@ -126,6 +126,7 @@ TEST_FILES := devlink_lib.sh \
 	tc_common.sh
 
 TEST_INCLUDES := \
-	../lib.sh
+	../lib.sh \
+	$(wildcard ../lib/sh/*.sh)
 
 include ../../lib.mk
diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile
index 5d796622e7309..8e3fc05a53979 100644
--- a/tools/testing/selftests/net/mptcp/Makefile
+++ b/tools/testing/selftests/net/mptcp/Makefile
@@ -11,7 +11,7 @@ TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq
 
 TEST_FILES := mptcp_lib.sh settings
 
-TEST_INCLUDES := ../lib.sh ../net_helper.sh
+TEST_INCLUDES := ../lib.sh $(wildcard ../lib/sh/*.sh) ../net_helper.sh
 
 EXTRA_CLEAN := *.pcap
 
diff --git a/tools/testing/selftests/net/netfilter/Makefile b/tools/testing/selftests/net/netfilter/Makefile
index 542f7886a0bc2..9d009f74cfc2d 100644
--- a/tools/testing/selftests/net/netfilter/Makefile
+++ b/tools/testing/selftests/net/netfilter/Makefile
@@ -55,4 +55,5 @@ TEST_FILES := lib.sh
 TEST_FILES += packetdrill
 
 TEST_INCLUDES := \
-	../lib.sh
+	../lib.sh \
+	$(wildcard ../lib/sh/*.sh)