diff --git a/lib/Hoymiles/src/parser/DevInfoParser.cpp b/lib/Hoymiles/src/parser/DevInfoParser.cpp
index 24ea883..343cdd0 100644
--- a/lib/Hoymiles/src/parser/DevInfoParser.cpp
+++ b/lib/Hoymiles/src/parser/DevInfoParser.cpp
@@ -170,8 +170,8 @@ uint8_t DevInfoParser::getDevIdx()
 /* struct tm to seconds since Unix epoch */
 time_t DevInfoParser::timegm(struct tm* t)
 {
-    register uint32_t year;
-    register time_t result;
+    uint32_t year;
+    time_t result;
 #define MONTHSPERYEAR 12 /* months per calendar year */
     static const int cumdays[MONTHSPERYEAR] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };