@@ -463,11 +463,11 @@
 	while (usec_ > 999999) {
 		usec_ -= 1000000;
 		sec_++;
 	}
 
-	while (usec < 0) {
+	while (usec_ < 0) {
 		usec_ += 1000000;
 		sec_--;
 	}
 
 	return sec_;
@@ -478,11 +478,11 @@
 	int32_t usec_ = (int32_t)usec - date->usec;
 
 	while (usec_ > 999999)
 		usec_ -= 1000000;
 
-	while (usec < 0)
+	while (usec_ < 0)
 		usec_ += 1000000;
 
 	return usec_;
 }