diff --git a/src/soc/amd/common/block/pci/pcie_gpp.c b/src/soc/amd/common/block/pci/pcie_gpp.c
index 58c7761..a3ac1cf 100644
--- a/src/soc/amd/common/block/pci/pcie_gpp.c
+++ b/src/soc/amd/common/block/pci/pcie_gpp.c
@@ -22,7 +22,7 @@
 		return NULL;
 
 	name = malloc(ACPI_NAME_BUFFER_SIZE);
-	snprintf(name, ACPI_NAME_BUFFER_SIZE, "GP%02x", dev->path.pci.devfn);
+	snprintf(name, ACPI_NAME_BUFFER_SIZE, "GP%02X", dev->path.pci.devfn);
 	name[4] = '\0';
 
 	return name;