diff --git a/src/machine/m_xt.c b/src/machine/m_xt.c
index 0cbf071d1..3fb30eab6 100644
--- a/src/machine/m_xt.c
+++ b/src/machine/m_xt.c
@@ -264,6 +264,9 @@ machine_xt_hed919_init(const machine_t *model)
 
     machine_xt_clone_init(model);
 
+    if (mem_size > 640)
+	mem_remap_top(mem_size - 640);
+
     return ret;
 }
 
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index ead2aa964..80f8fbf4b 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -123,7 +123,7 @@ const machine_t machines[] = {
 #endif
 
     /* 286 XT machines */
-    { "[Citygate D30 XT] Hedaka HED-919",	"hed919",		MACHINE_TYPE_286,		{{"",      cpus_286},         {"",    NULL},         {"",      NULL},        {"",      NULL},     {"",      NULL}}, MACHINE_ISA,											 64,  640,  64,   0,	       machine_xt_hed919_init, NULL			},
+    { "[Citygate D30 XT] Hedaka HED-919",	"hed919",		MACHINE_TYPE_286,		{{"",      cpus_286},         {"",    NULL},         {"",      NULL},        {"",      NULL},     {"",      NULL}}, MACHINE_ISA,											 64, 1024,  64,   0,	       machine_xt_hed919_init, NULL			},
 
     /* 286 AT machines */
     { "[ISA] IBM AT",				"ibmat",		MACHINE_TYPE_286,		{{"",      cpus_ibmat},       {"",    NULL},         {"",      NULL},        {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT,										256,15872, 128,  63,		  machine_at_ibm_init, NULL			},