diff --git a/src/string.h b/src/string.h
--- a/src/string.h
+++ b/src/string.h
@@ -49,7 +49,7 @@ enum CharSetFilter {
 void strtolower(char *str);
 
 
-static inline bool StrEmpty(const char *s) { return s[0] == '\0'; }
+static inline bool StrEmpty(const char *s) { return s == NULL || s[0] == '\0'; }
 
 
 /** Get the length of a string, within a limited buffer */