diff --git a/simavr/sim/sim_utils.c b/simavr/sim/sim_utils.c
index eeb49867c..53f40fd71 100644
--- a/simavr/sim/sim_utils.c
+++ b/simavr/sim/sim_utils.c
@@ -27,6 +27,20 @@
 
 #include "sim_utils.h"
 
+#ifdef __MINGW32__
+char *strsep(char **stringp, const char *delim) {
+	char *rv = *stringp;
+	if (rv) {
+		*stringp += strcspn(*stringp, delim);
+		if (**stringp)
+			*(*stringp)++ = '\0';
+		else
+			*stringp = 0;
+		}
+	return rv;
+}
+#endif
+
 static argv_p
 argv_realloc(
 	argv_p	argv,