diff --git a/src/ArmsItem.cpp b/src/ArmsItem.cpp
index 63365e22..0d4b405e 100644
--- a/src/ArmsItem.cpp
+++ b/src/ArmsItem.cpp
@@ -51,6 +51,8 @@ BOOL AddArmsData(long code, long max_num)
 
 		if (gArmsData[i].code == 0)
 			break; // Found free slot
+
+		++i;
 	}
 
 	if (i == ARMS_MAX)