diff --git a/desmume/src/utils/datetime.h b/desmume/src/utils/datetime.h
index 146609282..b050153e1 100644
--- a/desmume/src/utils/datetime.h
+++ b/desmume/src/utils/datetime.h
@@ -794,7 +794,7 @@ public:
 		char strmon[4];
 		int done = sscanf(str,"%04d-%3s-%02d %02d:%02d:%02d:%03d",&year,strmon,&day,&hour,&min,&sec,&ms);
 		if(done != 7) return false;
-		for(int i=1;i<12;i++)
+		for(int i=1;i<=12;i++)
 			if(!strncasecmp(monthnames[i],strmon,3))
 			{
 				mon=i;