diff --git a/sections/cper-section-dmar-generic.c b/sections/cper-section-dmar-generic.c
index 7468d30..e745d2b 100644
--- a/sections/cper-section-dmar-generic.c
+++ b/sections/cper-section-dmar-generic.c
@@ -11,8 +11,12 @@
 #include <libcper/sections/cper-section-dmar-generic.h>
 
 //Converts a single generic DMAr CPER section into JSON IR.
-json_object *cper_section_dmar_generic_to_ir(const void *section)
+json_object *cper_section_dmar_generic_to_ir(const UINT8 *section, UINT32 size)
 {
+	if (size < sizeof(EFI_DMAR_GENERIC_ERROR_DATA)) {
+		return NULL;
+	}
+
 	EFI_DMAR_GENERIC_ERROR_DATA *firmware_error =
 		(EFI_DMAR_GENERIC_ERROR_DATA *)section;
 	json_object *section_ir = json_object_new_object();