diff --git a/xpcom/ds/nsVoidArray.cpp b/xpcom/ds/nsVoidArray.cpp
index bce13b7773a4..64ca45c9bb13 100644
--- a/xpcom/ds/nsVoidArray.cpp
+++ b/xpcom/ds/nsVoidArray.cpp
@@ -349,7 +349,7 @@ nsVoidArray::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
   }
 }
 
-inline void* nsVoidArray::ElementAt(PRInt32 aIndex) const
+void* nsVoidArray::ElementAt(PRInt32 aIndex) const
 {
   if (aIndex < 0 || aIndex >= Count())
   {