diff -r fed2ead878ea -r 8ee9e23adbd2 src/string.c
--- a/src/string.c	Sat Oct 05 16:58:16 2019 +0200
+++ b/src/string.c	Sat Oct 05 17:07:16 2019 +0200
@@ -36,6 +36,10 @@
 #include <stdint.h>
 #include <ctype.h>
 
+#ifndef _WIN32
+#include <strings.h> /* for strncasecmp() */
+#endif /* _WIN32 */
+
 sstr_t sstr(char *cstring) {
     sstr_t string;
     string.ptr = cstring;