diff --git a/src/interfaces/Makefile b/src/interfaces/Makefile
index 9fe368eed50a8ee022118c338e365434d6737d8c..7d56b29d28f561c2f0b6f246630f667c18a3ed84 100644
--- a/src/interfaces/Makefile
+++ b/src/interfaces/Makefile
@@ -17,3 +17,4 @@ SUBDIRS = libpq ecpg
 $(recurse)
 
 all-ecpg-recurse: all-libpq-recurse
+install-ecpg-recurse: install-libpq-recurse
diff --git a/src/interfaces/ecpg/Makefile b/src/interfaces/ecpg/Makefile
index ca434c8ce22e56bd2214453a4d498ae3b3099844..e89f2fe0f28d987a2057ea4cfc5079f238e589ba 100644
--- a/src/interfaces/ecpg/Makefile
+++ b/src/interfaces/ecpg/Makefile
@@ -8,6 +8,8 @@ $(recurse)
 
 all-compatlib-recurse: all-ecpglib-recurse
 all-ecpglib-recurse: all-pgtypeslib-recurse
+install-compatlib-recurse: install-ecpglib-recurse
+install-ecpglib-recurse: install-pgtypeslib-recurse
 
 clean distclean maintainer-clean:
 	$(MAKE) -C test clean