diff --git a/drivers/pci/main.c b/drivers/pci/main.c
index 392719bcf..1e76f02ce 100644
--- a/drivers/pci/main.c
+++ b/drivers/pci/main.c
@@ -534,16 +534,16 @@ message *mp;
 	int r, devind, port, ioflag;
 	u32_t base, size;
 
-	devind= mp->BUSC_PGB_DEVIND;
-	port= mp->BUSC_PGB_PORT;
+	devind= mp->m_lsys_pci_busc_get_bar.devind;
+	port= mp->m_lsys_pci_busc_get_bar.port;
 
 	mp->m_type= pci_get_bar_s(devind, port, &base, &size, &ioflag);
 
 	if (mp->m_type == OK)
 	{
-		mp->BUSC_PGB_BASE= base;
-		mp->BUSC_PGB_SIZE= size;
-		mp->BUSC_PGB_IOFLAG= ioflag;
+		mp->m_pci_lsys_busc_get_bar.base= base;
+		mp->m_pci_lsys_busc_get_bar.size= size;
+		mp->m_pci_lsys_busc_get_bar.flags= ioflag;
 	}
 
 	r= ipc_send(mp->m_source, mp);
diff --git a/include/minix/com.h b/include/minix/com.h
index 39b2665ea..8cf461ae5 100644
--- a/include/minix/com.h
+++ b/include/minix/com.h
@@ -149,11 +149,6 @@
 #define BUSC_PCI_GET_BAR	(BUSC_RQ_BASE + 19)	/* Get Base Address
 							 * Register properties
 							 */
-#define   BUSC_PGB_DEVIND	m2_i1			/* device index */
-#define   BUSC_PGB_PORT		m2_i2			/* port (BAR offset) */
-#define   BUSC_PGB_BASE		m2_l1			/* BAR base address */
-#define   BUSC_PGB_SIZE		m2_l2			/* BAR size */
-#define   BUSC_PGB_IOFLAG	m2_i1			/* I/O space? */
 #define IOMMU_MAP		(BUSC_RQ_BASE + 32)	/* Ask IOMMU to map
 							 * a segment of memory
 							 */
diff --git a/include/minix/ipc.h b/include/minix/ipc.h
index 4eacc63e9..86ce534d8 100644
--- a/include/minix/ipc.h
+++ b/include/minix/ipc.h
@@ -598,6 +598,23 @@ typedef struct {
 } mess_lsys_krn_schedctl;
 _ASSERT_MSG_SIZE(mess_lsys_krn_schedctl);
 
+typedef struct {
+	int devind;
+	int port;
+
+	uint8_t padding[48];
+} mess_lsys_pci_busc_get_bar;
+_ASSERT_MSG_SIZE(mess_lsys_pci_busc_get_bar);
+
+typedef struct {
+	int base;
+	size_t size;
+	uint32_t flags;
+
+	uint8_t padding[44];
+} mess_pci_lsys_busc_get_bar;
+_ASSERT_MSG_SIZE(mess_pci_lsys_busc_get_bar);
+
 typedef struct {
 	endpoint_t endpt;
 
@@ -1233,6 +1250,8 @@ typedef struct {
 		mess_lsys_krn_schedctl	m_lsys_krn_schedctl;
 		mess_lsys_krn_schedule	m_lsys_krn_schedule;
 
+		mess_lsys_pci_busc_get_bar m_lsys_pci_busc_get_bar;
+
 		mess_lsys_pm_getepinfo	m_lsys_pm_getepinfo;
 		mess_lsys_pm_getprocnr	m_lsys_pm_getprocnr;
 		mess_lsys_pm_srv_fork	m_lsys_pm_srv_fork;
@@ -1244,6 +1263,8 @@ typedef struct {
 		mess_lsys_vfs_copyfd	m_lsys_vfs_copyfd;
 		mess_lsys_vfs_mapdriver	m_lsys_vfs_mapdriver;
 
+		mess_pci_lsys_busc_get_bar m_pci_lsys_busc_get_bar;
+
 		mess_pm_lexec_exec_new	m_pm_lexec_exec_new;
 
 		mess_pm_lc_getgid	m_pm_lc_getgid;
diff --git a/lib/libsys/pci_get_bar.c b/lib/libsys/pci_get_bar.c
index a629f62f2..7fff04341 100644
--- a/lib/libsys/pci_get_bar.c
+++ b/lib/libsys/pci_get_bar.c
@@ -20,8 +20,8 @@ int *ioflag;
 	message m;
 
 	m.m_type= BUSC_PCI_GET_BAR;
-	m.BUSC_PGB_DEVIND= devind;
-	m.BUSC_PGB_PORT= port;
+	m.m_lsys_pci_busc_get_bar.devind = devind;
+	m.m_lsys_pci_busc_get_bar.port = port;
 
 	r= ipc_sendrec(pci_procnr, &m);
 	if (r != 0)
@@ -29,9 +29,9 @@ int *ioflag;
 
 	if (m.m_type == 0)
 	{
-		*base= m.BUSC_PGB_BASE;
-		*size= m.BUSC_PGB_SIZE;
-		*ioflag= m.BUSC_PGB_IOFLAG;
+		*base= m.m_pci_lsys_busc_get_bar.base;
+		*size= m.m_pci_lsys_busc_get_bar.size;
+		*ioflag= m.m_pci_lsys_busc_get_bar.flags;
 	}
 	return m.m_type;
 }