diff --git a/drivers/mtd/nand/raw/sand_nand.c b/drivers/mtd/nand/raw/sand_nand.c
index 229d7b5..456e841 100644
--- a/drivers/mtd/nand/raw/sand_nand.c
+++ b/drivers/mtd/nand/raw/sand_nand.c
@@ -601,7 +601,7 @@
 		}
 
 		nand = &chip->nand;
-		nand->options = spl_in_proper() ? 0 : NAND_SKIP_BBTSCAN;
+		nand->options = not_xpl() ? 0 : NAND_SKIP_BBTSCAN;
 		nand->flash_node = np;
 		nand->dev_ready = sand_nand_dev_ready;
 		nand->cmdfunc = sand_nand_command;
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index 7f8a6ba..5676c09 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -196,7 +196,7 @@
 	return xpl_phase() == PHASE_TPL ||
 		(!IS_ENABLED(CONFIG_TPL) &&
 		 !IS_ENABLED(CONFIG_ROCKCHIP_EXTERNAL_TPL) &&
-		 !spl_in_proper());
+		 !not_xpl());
 }
 
 static struct io_setting *
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 6fcb5b5..55bc396 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -473,7 +473,7 @@
 	struct ns16550_plat *plat = com_port->plat;
 
 	/* save code size */
-	if (!spl_in_proper())
+	if (!not_xpl())
 		return -ENOSYS;
 
 	info->type = SERIAL_CHIP_16550_COMPATIBLE;
@@ -555,7 +555,7 @@
 	struct clk clk;
 	int err;
 
-	addr = spl_in_proper() ? dev_read_addr_size(dev, &size) :
+	addr = not_xpl() ? dev_read_addr_size(dev, &size) :
 		dev_read_addr(dev);
 	err = ns16550_serial_assign_base(plat, addr, size);
 	if (err && !device_is_on_pci_bus(dev))
diff --git a/include/spl.h b/include/spl.h
index bf01113..9484861 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -134,8 +134,8 @@
 #endif
 }
 
-/* returns true if in U-Boot proper, false if in SPL */
-static inline bool spl_in_proper(void)
+/* returns true if in U-Boot proper, false if in xPL */
+static inline bool not_xpl(void)
 {
 #ifdef CONFIG_SPL_BUILD
 	return false;