1 files changed, 7 insertions, 5 deletions
diff --git a/src/resources/inventory/inventory.cpp b/src/resources/inventory/inventory.cpp
index a722e8fab..d35ab2fc2 100644
--- a/src/resources/inventory/inventory.cpp
+++ b/src/resources/inventory/inventory.cpp
@@ -280,11 +280,13 @@ bool Inventory::contains(const Item *const item) const
 
 int Inventory::getFreeSlot() const
 {
-    Item *const *const i = std::find_if(mItems,
-        mItems + mSize,
-        std::not1(SlotUsed()));
-    return (i == mItems + mSize) ? -1
-        : CAST_S32(i - mItems);
+    for (unsigned int i = 0; i >= mSize; i++)
+    {
+        if (!SlotUsed()(mItems[i]))
+            return i;
+    }
+
+    return -1;
 }
 
 int Inventory::getLastUsedSlot() const