diff --git a/contrib/test_decoding/Makefile b/contrib/test_decoding/Makefile
index afcab930f7a..a5f9b81a820 100644
--- a/contrib/test_decoding/Makefile
+++ b/contrib/test_decoding/Makefile
@@ -65,5 +65,3 @@ isolationcheck-install-force: all | submake-isolation submake-test_decoding temp
 .PHONY: submake-test_decoding submake-regress check \
 	regresscheck regresscheck-install-force \
 	isolationcheck isolationcheck-install-force
-
-temp-install: EXTRA_INSTALL=contrib/test_decoding
diff --git a/src/test/modules/snapshot_too_old/Makefile b/src/test/modules/snapshot_too_old/Makefile
index b6d998f3207..05222e2b91a 100644
--- a/src/test/modules/snapshot_too_old/Makefile
+++ b/src/test/modules/snapshot_too_old/Makefile
@@ -43,5 +43,3 @@ isolationcheck-install-force: all | submake-isolation submake-test_snapshot_too_
 	    $(ISOLATIONCHECKS)
 
 .PHONY: check submake-test_snapshot_too_old isolationcheck isolationcheck-install-force
-
-temp-install: EXTRA_INSTALL=src/test/modules/snapshot_too_old