diff --git a/repos/pc/lib/import/import-pc_lx_emul.mk b/repos/pc/lib/import/import-pc_lx_emul.mk
index d9de8e04bf..7e9a411ec4 100644
--- a/repos/pc/lib/import/import-pc_lx_emul.mk
+++ b/repos/pc/lib/import/import-pc_lx_emul.mk
@@ -23,6 +23,7 @@ SRC_C   += lx_emul/shadow/kernel/sched/sched.c
 SRC_C   += lx_emul/shadow/lib/devres.c
 SRC_C   += lx_emul/shadow/lib/smp_processor_id.c
 SRC_C   += lx_emul/shadow/mm/memblock.c
+SRC_C   += lx_emul/shadow/mm/page_alloc.c
 SRC_CC  += lx_emul/pci_config_space.cc
 SRC_CC  += lx_emul/pci_init.cc
 SRC_CC  += lx_kit/device.cc