diff --git a/cper-utils.h b/cper-utils.h
index aa5265b..9446237 100644
--- a/cper-utils.h
+++ b/cper-utils.h
@@ -5,6 +5,9 @@
 #define TIMESTAMP_LENGTH 24
 
 json_object* integer_to_readable_pair(int value, int len, int keys[], const char* values[], const char* default_value);
+json_object* bitfield8_to_ir(UINT8 bitfield, int num_fields, const char* names[]);
+json_object* bitfield_to_ir(UINT32 bitfield, int num_fields, const char* names[]);
+json_object* bitfield64_to_ir(UINT64 bitfield, int num_fields, const char* names[]);
 json_object* revision_to_ir(UINT16 revision);
 const char* severity_to_string(UINT8 severity);
 void guid_to_string(char* out, EFI_GUID* guid);