diff --git a/src/log.c b/src/log.c
index 7031ee9..4e13d9d 100644
--- a/src/log.c
+++ b/src/log.c
@@ -50,6 +50,7 @@ static attr_const const char *log_level_to_string(enum log_level level) {
 	case LOG_LEVEL_INFO: return "INFO";
 	case LOG_LEVEL_WARN: return "WARN";
 	case LOG_LEVEL_ERROR: return "ERROR";
+	case LOG_LEVEL_FATAL: return "FATAL ERROR";
 	default: assert(false);
 	}
 }
@@ -93,13 +94,13 @@ void log_destroy(struct log *l) {
 }
 
 void log_set_level(struct log *l, int level) {
-	assert(level < LOG_LEVEL_INVALID && level > 0);
+	assert(level <= LOG_LEVEL_FATAL && level >= 0);
 	l->log_level = level;
 }
 
 attr_printf(4, 5) void log_printf(struct log *l, int level, const char *func,
                                   const char *fmt, ...) {
-	assert(level < LOG_LEVEL_INVALID && level > 0);
+	assert(level <= LOG_LEVEL_FATAL && level >= 0);
 	if (level < l->log_level)
 		return;
 
@@ -208,6 +209,7 @@ const char *terminal_colorize_begin(enum log_level level) {
 	case LOG_LEVEL_INFO: return ANSI("92");
 	case LOG_LEVEL_WARN: return ANSI("33");
 	case LOG_LEVEL_ERROR: return ANSI("31;1");
+	case LOG_LEVEL_FATAL: return ANSI("30;103;1");
 	default: assert(false);
 	}
 }
diff --git a/src/log.h b/src/log.h
index 55392da..ef90a9b 100644
--- a/src/log.h
+++ b/src/log.h
@@ -8,12 +8,13 @@
 #include "compiler.h"
 
 enum log_level {
+	LOG_LEVEL_INVALID = -1,
 	LOG_LEVEL_TRACE = 0,
 	LOG_LEVEL_DEBUG,
 	LOG_LEVEL_INFO,
 	LOG_LEVEL_WARN,
 	LOG_LEVEL_ERROR,
-	LOG_LEVEL_INVALID
+	LOG_LEVEL_FATAL,
 };
 
 #define LOG(level, x, ...)                                                               \
@@ -23,6 +24,7 @@ enum log_level {
 #define log_info(x, ...) LOG(INFO, x, ##__VA_ARGS__)
 #define log_warn(x, ...) LOG(WARN, x, ##__VA_ARGS__)
 #define log_error(x, ...) LOG(ERROR, x, ##__VA_ARGS__)
+#define log_fatal(x, ...) LOG(FATAL, x, ##__VA_ARGS__)
 
 /// Print out an error message.
 #define printf_err(format, ...) log_error(format, ##__VA_ARGS__)