diff --git a/src/util/IntrusiveForwardList.hxx b/src/util/IntrusiveForwardList.hxx
index d80cf78c1..09e852dbe 100644
--- a/src/util/IntrusiveForwardList.hxx
+++ b/src/util/IntrusiveForwardList.hxx
@@ -232,6 +232,12 @@ public:
 			cursor = cursor->next;
 			return *this;
 		}
+
+		iterator operator++(int) noexcept {
+			auto old = *this;
+			cursor = cursor->next;
+			return old;
+		}
 	};
 
 	constexpr iterator before_begin() noexcept {
@@ -286,6 +292,12 @@ public:
 			cursor = cursor->next;
 			return *this;
 		}
+
+		const_iterator operator++(int) noexcept {
+			auto old = *this;
+			cursor = cursor->next;
+			return old;
+		}
 	};
 
 	constexpr const_iterator begin() const noexcept {