diff --git a/cper-parse.c b/cper-parse.c
index edbae56..af7d424 100644
--- a/cper-parse.c
+++ b/cper-parse.c
@@ -38,7 +38,7 @@
 
 	if (remaining < sizeof(EFI_COMMON_ERROR_RECORD_HEADER)) {
 		cper_print_log(
-			"Invalid CPER file: Invalid header (incorrect signature).\n");
+			"Invalid CPER file: Invalid header (not enough bytes).\n");
 		goto fail;
 	}
 
@@ -48,7 +48,8 @@
 	remaining -= sizeof(EFI_COMMON_ERROR_RECORD_HEADER);
 	if (header->SignatureStart != EFI_ERROR_RECORD_SIGNATURE_START) {
 		cper_print_log(
-			"Invalid CPER file: Invalid header (incorrect signature).\n");
+			"Invalid CPER file: Invalid header (incorrect signature). %x\n",
+			header->SignatureStart);
 		goto fail;
 	}
 	if (header->SectionCount == 0) {