diff --git a/social/social.go b/social/social.go
index 851114d4b25a29f7a5ddc36649745580f2ce543e..75b051731d01c2afdf19283dd634ac7f717407ab 100644
--- a/social/social.go
+++ b/social/social.go
@@ -92,7 +92,7 @@ type GoogleProfile struct {
 
 // SteamProfile is an abbreviated version of a Steam profile.
 type SteamProfile struct {
-	SteamID uint64 `json:"steamid"`
+	SteamID uint64 `json:"steamid,string"`
 }
 
 // SteamError contains a possible error response from the Steam Web API.