diff --git a/src/mainboard/google/poppy/romstage.c b/src/mainboard/google/poppy/romstage.c
index f9b23e501a..f49fbf423f 100644
--- a/src/mainboard/google/poppy/romstage.c
+++ b/src/mainboard/google/poppy/romstage.c
@@ -147,6 +147,7 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 	FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig;
 	struct memory_params p;
 
+	memset(&p, 0, sizeof(p));
 	variant_memory_params(&p);
 
 	assert(p.type < MEMORY_COUNT);