diff --git a/sgsnemu/Makefile.am b/sgsnemu/Makefile.am
index 4d02eca..9f10cd2 100644
--- a/sgsnemu/Makefile.am
+++ b/sgsnemu/Makefile.am
@@ -5,5 +5,11 @@
 AM_CFLAGS = -O2 -D_GNU_SOURCE -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb $(LIBOSMOCORE_CFLAGS)
 
 sgsnemu_LDADD = @EXEC_LDADD@ -lgtp -L../gtp ../lib/libmisc.a $(LIBOSMOCORE_LIBS)
+
+if ENABLE_GTP_KERNEL
+AM_CFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
+sgsnemu_LDADD += $(LIBGTPNL_LIBS)
+endif
+
 sgsnemu_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.a
 sgsnemu_SOURCES = sgsnemu.c cmdline.c cmdline.h