diff --git a/sysdeps/mach/Makefile b/sysdeps/mach/Makefile
index 83d0e03ab3..b1f87e39eb 100644
--- a/sysdeps/mach/Makefile
+++ b/sysdeps/mach/Makefile
@@ -74,4 +74,9 @@ endif
 
 LDLIBS-pthread.so += $(objdir)/mach/libmachuser.so
 
+ifeq (mach,$(subdir))
+update-abi-libmachuser:
+	@:
+endif
+
 endif	# in-Makerules
diff --git a/sysdeps/mach/hurd/Makefile b/sysdeps/mach/hurd/Makefile
index 356bddde80..829207665c 100644
--- a/sysdeps/mach/hurd/Makefile
+++ b/sysdeps/mach/hurd/Makefile
@@ -226,4 +226,9 @@ endif
 LDLIBS-pthread.so += $(objdir)/hurd/libhurduser.so
 LDLIBS-c_malloc_debug.so += $(link-rpcuserlibs)
 
+ifeq (hurd,$(subdir))
+update-abi-libhurduser:
+	@:
+endif
+
 endif	# in-Makerules