diff --git a/src/util/src/ttime.c b/src/util/src/ttime.c
index 0e749b5be9..05ba01979e 100644
--- a/src/util/src/ttime.c
+++ b/src/util/src/ttime.c
@@ -142,21 +142,15 @@ int32_t parseTimezone(char* str, int64_t* tzOffset) {
     i += 2;
   }
 
-  if (hour > 12) {
+  int64_t minute = strnatoi(&str[i], 2);
+  if (minute > 59) {
     return -1;
   }
 
-  int64_t sec = strnatoi(&str[i], 2);
-  if (sec > 70) {
-    return -1;
-  }
-
-  sec += (hour * 3600);
-
   if (str[0] == '+') {
-    *tzOffset = -sec;
+    *tzOffset = -(hour * 3600 + minute * 60);
   } else {
-    *tzOffset = sec;
+    *tzOffset = hour * 3600 + minute * 60;
   }
 
   return 0;
diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 710d56603f..f9bd6aace4 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -227,7 +227,7 @@ int64_t strnatoi(char *num, int32_t len) {
       } else {
         return 0;
       }
-      ret = dig * base;
+      ret += dig * base;
     }
   } else {
     for (i = len - 1; i >= 0; --i, base *= 10) {