diff --git a/src/soc/amd/sabrina/fsp_m_params.c b/src/soc/amd/sabrina/fsp_m_params.c
index f069ba8f61..8a8300841d 100644
--- a/src/soc/amd/sabrina/fsp_m_params.c
+++ b/src/soc/amd/sabrina/fsp_m_params.c
@@ -47,10 +47,10 @@ static void fill_ddi_descriptors(FSP_M_CONFIG *mcfg,
 
 static void fsp_fill_pcie_ddi_descriptors(FSP_M_CONFIG *mcfg)
 {
-	const fsp_dxio_descriptor *fsp_dxio;
-	const fsp_ddi_descriptor *fsp_ddi;
-	size_t num_dxio;
-	size_t num_ddi;
+	const fsp_dxio_descriptor *fsp_dxio = NULL;
+	const fsp_ddi_descriptor *fsp_ddi = NULL;
+	size_t num_dxio = 0;
+	size_t num_ddi = 0;
 
 	mainboard_get_dxio_ddi_descriptors(&fsp_dxio, &num_dxio,
 						&fsp_ddi, &num_ddi);